// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// This file has been automatically generated. Please do not edit it manually.
// To regenerate the file, use the script
// "pkg/analysis_server/tool/lsp_spec/generate_all.dart".

import 'dart:core' hide deprecated;
import 'dart:core' as core show deprecated;
import 'package:analysis_server/lsp_protocol/protocol_special.dart';

class ApplyWorkspaceEditParams {
  ApplyWorkspaceEditParams(this.label, this.edit) {
    if (edit == null) {
      throw 'edit is required but was not provided';
    }
  }
  factory ApplyWorkspaceEditParams.fromJson(Map<String, dynamic> json) {
    final label = json['label'];
    final edit = new WorkspaceEdit.fromJson(json['edit']);
    return new ApplyWorkspaceEditParams(label, edit);
  }

  /// The edits to apply.
  final WorkspaceEdit edit;

  /// An optional label of the workspace edit. This label is presented in the
  /// user interface for example on an undo stack to undo the workspace edit.
  final String label;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (label != null) {
      __result['label'] = label;
    }
    __result['edit'] = edit ?? (throw 'edit is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('edit') &&
        WorkspaceEdit.canParse(obj['edit']);
  }
}

class ApplyWorkspaceEditResponse {
  ApplyWorkspaceEditResponse(this.applied) {
    if (applied == null) {
      throw 'applied is required but was not provided';
    }
  }
  factory ApplyWorkspaceEditResponse.fromJson(Map<String, dynamic> json) {
    final applied = json['applied'];
    return new ApplyWorkspaceEditResponse(applied);
  }

  /// Indicates whether the edit was applied or not.
  final bool applied;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['applied'] =
        applied ?? (throw 'applied is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('applied') &&
        obj['applied'] is bool;
  }
}

class CancelParams {
  CancelParams(this.id) {
    if (id == null) {
      throw 'id is required but was not provided';
    }
  }
  factory CancelParams.fromJson(Map<String, dynamic> json) {
    final id = json['id'] is num
        ? new Either2<num, String>.t1(json['id'])
        : (json['id'] is String
            ? new Either2<num, String>.t2(json['id'])
            : (throw '''${json['id']} was not one of (number, string)'''));
    return new CancelParams(id);
  }

  /// The request id to cancel.
  final Either2<num, String> id;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['id'] = id ?? (throw 'id is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('id') &&
        (obj['id'] is num || obj['id'] is String);
  }
}

class ClientCapabilities {
  ClientCapabilities(this.workspace, this.textDocument, this.experimental);
  factory ClientCapabilities.fromJson(Map<String, dynamic> json) {
    final workspace =
        new WorkspaceClientCapabilities.fromJson(json['workspace']);
    final textDocument =
        new TextDocumentClientCapabilities.fromJson(json['textDocument']);
    final experimental = json['experimental'];
    return new ClientCapabilities(workspace, textDocument, experimental);
  }

  /// Experimental client capabilities.
  final dynamic experimental;

  /// Text document specific client capabilities.
  final TextDocumentClientCapabilities textDocument;

  /// Workspace specific client capabilities.
  final WorkspaceClientCapabilities workspace;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (workspace != null) {
      __result['workspace'] = workspace;
    }
    if (textDocument != null) {
      __result['textDocument'] = textDocument;
    }
    if (experimental != null) {
      __result['experimental'] = experimental;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// A code action represents a change that can be performed in code, e.g. to fix
/// a problem or to refactor code.
///
/// A CodeAction must set either `edit` and/or a `command`. If both are
/// supplied, the `edit` is applied first, then the `command` is executed.
class CodeAction {
  CodeAction(this.title, this.kind, this.diagnostics, this.edit, this.command) {
    if (title == null) {
      throw 'title is required but was not provided';
    }
  }
  factory CodeAction.fromJson(Map<String, dynamic> json) {
    final title = json['title'];
    final kind = json['kind'];
    final diagnostics = json['diagnostics']
        ?.map((item) => new Diagnostic.fromJson(item))
        ?.cast<Diagnostic>()
        ?.toList();
    final edit = new WorkspaceEdit.fromJson(json['edit']);
    final command = new Command.fromJson(json['command']);
    return new CodeAction(title, kind, diagnostics, edit, command);
  }

  /// A command this code action executes. If a code action provides an edit and
  /// a command, first the edit is executed and then the command.
  final Command command;

  /// The diagnostics that this code action resolves.
  final List<Diagnostic> diagnostics;

  /// The workspace edit this code action performs.
  final WorkspaceEdit edit;

  /// The kind of the code action.
  ///
  /// Used to filter code actions.
  final String kind;

  /// A short, human-readable, title for this code action.
  final String title;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['title'] = title ?? (throw 'title is required but was not set');
    if (kind != null) {
      __result['kind'] = kind;
    }
    if (diagnostics != null) {
      __result['diagnostics'] = diagnostics;
    }
    if (edit != null) {
      __result['edit'] = edit;
    }
    if (command != null) {
      __result['command'] = command;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('title') &&
        obj['title'] is String;
  }
}

/// Contains additional diagnostic information about the context in which a code
/// action is run.
class CodeActionContext {
  CodeActionContext(this.diagnostics, this.only) {
    if (diagnostics == null) {
      throw 'diagnostics is required but was not provided';
    }
  }
  factory CodeActionContext.fromJson(Map<String, dynamic> json) {
    final diagnostics = json['diagnostics']
        ?.map((item) => new Diagnostic.fromJson(item))
        ?.cast<Diagnostic>()
        ?.toList();
    final only = json['only']?.map((item) => item)?.cast<String>()?.toList();
    return new CodeActionContext(diagnostics, only);
  }

  /// An array of diagnostics.
  final List<Diagnostic> diagnostics;

  /// Requested kind of actions to return.
  ///
  /// Actions not of this kind are filtered out by the client before being
  /// shown. So servers can omit computing them.
  final List<String> only;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['diagnostics'] =
        diagnostics ?? (throw 'diagnostics is required but was not set');
    if (only != null) {
      __result['only'] = only;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('diagnostics') &&
        (obj['diagnostics'] is List &&
            (obj['diagnostics'].length == 0 ||
                obj['diagnostics'].every((item) => Diagnostic.canParse(item))));
  }
}

/// A set of predefined code action kinds
abstract class CodeActionKind {
  /// Base kind for quickfix actions: 'quickfix'
  static const QuickFix = 'quickfix';

  /// Base kind for refactoring actions: 'refactor'
  static const Refactor = 'refactor';

  /// Base kind for refactoring extraction actions: 'refactor.extract'
  ///
  /// Example extract actions:
  ///
  /// - Extract method
  /// - Extract function
  /// - Extract variable
  /// - Extract interface from class
  /// - ...
  static const RefactorExtract = 'refactor.extract';

  /// Base kind for refactoring inline actions: 'refactor.inline'
  ///
  /// Example inline actions:
  ///
  /// - Inline function
  /// - Inline variable
  /// - Inline constant
  /// - ...
  static const RefactorInline = 'refactor.inline';

  /// Base kind for refactoring rewrite actions: 'refactor.rewrite'
  ///
  /// Example rewrite actions:
  ///
  /// - Convert JavaScript function to class
  /// - Add or remove parameter
  /// - Encapsulate field
  /// - Make method static
  /// - Move method to base class
  /// - ...
  static const RefactorRewrite = 'refactor.rewrite';

  /// Base kind for source actions: `source`
  ///
  /// Source code actions apply to the entire file.
  static const Source = 'source';

  /// Base kind for an organize imports source action: `source.organizeImports`
  static const SourceOrganizeImports = 'source.organizeImports';
}

/// Code Action options.
class CodeActionOptions {
  CodeActionOptions(this.codeActionKinds);
  factory CodeActionOptions.fromJson(Map<String, dynamic> json) {
    final codeActionKinds =
        json['codeActionKinds']?.map((item) => item)?.cast<String>()?.toList();
    return new CodeActionOptions(codeActionKinds);
  }

  /// CodeActionKinds that this server may return.
  ///
  /// The list of kinds may be generic, such as `CodeActionKind.Refactor`, or
  /// the server may list out every specific kind they provide.
  final List<String> codeActionKinds;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (codeActionKinds != null) {
      __result['codeActionKinds'] = codeActionKinds;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// Params for the CodeActionRequest
class CodeActionParams {
  CodeActionParams(this.textDocument, this.range, this.context) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (range == null) {
      throw 'range is required but was not provided';
    }
    if (context == null) {
      throw 'context is required but was not provided';
    }
  }
  factory CodeActionParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final range = new Range.fromJson(json['range']);
    final context = new CodeActionContext.fromJson(json['context']);
    return new CodeActionParams(textDocument, range, context);
  }

  /// Context carrying additional information.
  final CodeActionContext context;

  /// The range for which the command was invoked.
  final Range range;

  /// The document in which the command was invoked.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['range'] = range ?? (throw 'range is required but was not set');
    __result['context'] =
        context ?? (throw 'context is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']) &&
        obj.containsKey('context') &&
        CodeActionContext.canParse(obj['context']);
  }
}

class CodeActionRegistrationOptions
    implements TextDocumentRegistrationOptions, CodeActionOptions {
  CodeActionRegistrationOptions(this.documentSelector, this.codeActionKinds);
  factory CodeActionRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    final codeActionKinds =
        json['codeActionKinds']?.map((item) => item)?.cast<String>()?.toList();
    return new CodeActionRegistrationOptions(documentSelector, codeActionKinds);
  }

  /// CodeActionKinds that this server may return.
  ///
  /// The list of kinds may be generic, such as `CodeActionKind.Refactor`, or
  /// the server may list out every specific kind they provide.
  final List<String> codeActionKinds;

  /// A document selector to identify the scope of the registration. If set to
  /// null the document selector provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['documentSelector'] = documentSelector;
    if (codeActionKinds != null) {
      __result['codeActionKinds'] = codeActionKinds;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// A code lens represents a command that should be shown along with source
/// text, like the number of references, a way to run tests, etc.
///
/// A code lens is _unresolved_ when no command is associated to it. For
/// performance reasons the creation of a code lens and resolving should be done
/// in two stages.
class CodeLens {
  CodeLens(this.range, this.command, this.data) {
    if (range == null) {
      throw 'range is required but was not provided';
    }
  }
  factory CodeLens.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final command = new Command.fromJson(json['command']);
    final data = json['data'];
    return new CodeLens(range, command, data);
  }

  /// The command this code lens represents.
  final Command command;

  /// A data entry field that is preserved on a code lens item between a code
  /// lens and a code lens resolve request.
  final dynamic data;

  /// The range in which this code lens is valid. Should only span a single
  /// line.
  final Range range;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['range'] = range ?? (throw 'range is required but was not set');
    if (command != null) {
      __result['command'] = command;
    }
    if (data != null) {
      __result['data'] = data;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']);
  }
}

/// Code Lens options.
class CodeLensOptions {
  CodeLensOptions(this.resolveProvider);
  factory CodeLensOptions.fromJson(Map<String, dynamic> json) {
    final resolveProvider = json['resolveProvider'];
    return new CodeLensOptions(resolveProvider);
  }

  /// Code lens has a resolve provider as well.
  final bool resolveProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (resolveProvider != null) {
      __result['resolveProvider'] = resolveProvider;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class CodeLensParams {
  CodeLensParams(this.textDocument) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory CodeLensParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    return new CodeLensParams(textDocument);
  }

  /// The document to request code lens for.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']);
  }
}

class CodeLensRegistrationOptions implements TextDocumentRegistrationOptions {
  CodeLensRegistrationOptions(this.resolveProvider, this.documentSelector);
  factory CodeLensRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final resolveProvider = json['resolveProvider'];
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new CodeLensRegistrationOptions(resolveProvider, documentSelector);
  }

  /// A document selector to identify the scope of the registration. If set to
  /// null the document selector provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  /// Code lens has a resolve provider as well.
  final bool resolveProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (resolveProvider != null) {
      __result['resolveProvider'] = resolveProvider;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// Represents a color in RGBA space.
class Color {
  Color(this.red, this.green, this.blue, this.alpha) {
    if (red == null) {
      throw 'red is required but was not provided';
    }
    if (green == null) {
      throw 'green is required but was not provided';
    }
    if (blue == null) {
      throw 'blue is required but was not provided';
    }
    if (alpha == null) {
      throw 'alpha is required but was not provided';
    }
  }
  factory Color.fromJson(Map<String, dynamic> json) {
    final red = json['red'];
    final green = json['green'];
    final blue = json['blue'];
    final alpha = json['alpha'];
    return new Color(red, green, blue, alpha);
  }

  final num alpha;
  final num blue;
  final num green;
  final num red;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['red'] = red ?? (throw 'red is required but was not set');
    __result['green'] = green ?? (throw 'green is required but was not set');
    __result['blue'] = blue ?? (throw 'blue is required but was not set');
    __result['alpha'] = alpha ?? (throw 'alpha is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('red') &&
        obj['red'] is num &&
        obj.containsKey('green') &&
        obj['green'] is num &&
        obj.containsKey('blue') &&
        obj['blue'] is num &&
        obj.containsKey('alpha') &&
        obj['alpha'] is num;
  }
}

class ColorInformation {
  ColorInformation(this.range, this.color) {
    if (range == null) {
      throw 'range is required but was not provided';
    }
    if (color == null) {
      throw 'color is required but was not provided';
    }
  }
  factory ColorInformation.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final color = new Color.fromJson(json['color']);
    return new ColorInformation(range, color);
  }

  /// The actual color value for this color range.
  final Color color;

  /// The range in the document where this color appears.
  final Range range;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['range'] = range ?? (throw 'range is required but was not set');
    __result['color'] = color ?? (throw 'color is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']) &&
        obj.containsKey('color') &&
        Color.canParse(obj['color']);
  }
}

class ColorPresentation {
  ColorPresentation(this.label, this.textEdit, this.additionalTextEdits) {
    if (label == null) {
      throw 'label is required but was not provided';
    }
  }
  factory ColorPresentation.fromJson(Map<String, dynamic> json) {
    final label = json['label'];
    final textEdit = new TextEdit.fromJson(json['textEdit']);
    final additionalTextEdits = json['additionalTextEdits']
        ?.map((item) => new TextEdit.fromJson(item))
        ?.cast<TextEdit>()
        ?.toList();
    return new ColorPresentation(label, textEdit, additionalTextEdits);
  }

  /// An optional array of additional text edits ([TextEdit]) that are applied
  /// when selecting this color presentation. Edits must not overlap with the
  /// main [edit](#ColorPresentation.textEdit) nor with themselves.
  final List<TextEdit> additionalTextEdits;

  /// The label of this color presentation. It will be shown on the color picker
  /// header. By default this is also the text that is inserted when selecting
  /// this color presentation.
  final String label;

  /// An edit ([TextEdit]) which is applied to a document when selecting this
  /// presentation for the color.  When `falsy` the
  /// [label](#ColorPresentation.label) is used.
  final TextEdit textEdit;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['label'] = label ?? (throw 'label is required but was not set');
    if (textEdit != null) {
      __result['textEdit'] = textEdit;
    }
    if (additionalTextEdits != null) {
      __result['additionalTextEdits'] = additionalTextEdits;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('label') &&
        obj['label'] is String;
  }
}

class ColorPresentationParams {
  ColorPresentationParams(this.textDocument, this.color, this.range) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (color == null) {
      throw 'color is required but was not provided';
    }
    if (range == null) {
      throw 'range is required but was not provided';
    }
  }
  factory ColorPresentationParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final color = new Color.fromJson(json['color']);
    final range = new Range.fromJson(json['range']);
    return new ColorPresentationParams(textDocument, color, range);
  }

  /// The color information to request presentations for.
  final Color color;

  /// The range where the color would be inserted. Serves as a context.
  final Range range;

  /// The text document.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['color'] = color ?? (throw 'color is required but was not set');
    __result['range'] = range ?? (throw 'range is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('color') &&
        Color.canParse(obj['color']) &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']);
  }
}

/// Color provider options.
class ColorProviderOptions {
  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class Command {
  Command(this.title, this.command, this.arguments) {
    if (title == null) {
      throw 'title is required but was not provided';
    }
    if (command == null) {
      throw 'command is required but was not provided';
    }
  }
  factory Command.fromJson(Map<String, dynamic> json) {
    final title = json['title'];
    final command = json['command'];
    final arguments =
        json['arguments']?.map((item) => item)?.cast<dynamic>()?.toList();
    return new Command(title, command, arguments);
  }

  /// Arguments that the command handler should be invoked with.
  final List<dynamic> arguments;

  /// The identifier of the actual command handler.
  final String command;

  /// Title of the command, like `save`.
  final String title;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['title'] = title ?? (throw 'title is required but was not set');
    __result['command'] =
        command ?? (throw 'command is required but was not set');
    if (arguments != null) {
      __result['arguments'] = arguments;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('title') &&
        obj['title'] is String &&
        obj.containsKey('command') &&
        obj['command'] is String;
  }
}

/// Contains additional information about the context in which a completion
/// request is triggered.
class CompletionContext {
  CompletionContext(this.triggerKind, this.triggerCharacter) {
    if (triggerKind == null) {
      throw 'triggerKind is required but was not provided';
    }
  }
  factory CompletionContext.fromJson(Map<String, dynamic> json) {
    final triggerKind = new CompletionTriggerKind.fromJson(json['triggerKind']);
    final triggerCharacter = json['triggerCharacter'];
    return new CompletionContext(triggerKind, triggerCharacter);
  }

  /// The trigger character (a single character) that has trigger code complete.
  /// Is undefined if `triggerKind !== CompletionTriggerKind.TriggerCharacter`
  final String triggerCharacter;

  /// How the completion was triggered.
  final CompletionTriggerKind triggerKind;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['triggerKind'] =
        triggerKind ?? (throw 'triggerKind is required but was not set');
    if (triggerCharacter != null) {
      __result['triggerCharacter'] = triggerCharacter;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('triggerKind') &&
        CompletionTriggerKind.canParse(obj['triggerKind']);
  }
}

class CompletionItem {
  CompletionItem(
      this.label,
      this.kind,
      this.detail,
      this.documentation,
      this.deprecated,
      this.preselect,
      this.sortText,
      this.filterText,
      this.insertText,
      this.insertTextFormat,
      this.textEdit,
      this.additionalTextEdits,
      this.commitCharacters,
      this.command,
      this.data) {
    if (label == null) {
      throw 'label is required but was not provided';
    }
  }
  factory CompletionItem.fromJson(Map<String, dynamic> json) {
    final label = json['label'];
    final kind = new CompletionItemKind.fromJson(json['kind']);
    final detail = json['detail'];
    final documentation = json['documentation'] is String
        ? new Either2<String, MarkupContent>.t1(json['documentation'])
        : (MarkupContent.canParse(json['documentation'])
            ? new Either2<String, MarkupContent>.t2(
                new MarkupContent.fromJson(json['documentation']))
            : (throw '''${json['documentation']} was not one of (string, MarkupContent)'''));
    final deprecated = json['deprecated'];
    final preselect = json['preselect'];
    final sortText = json['sortText'];
    final filterText = json['filterText'];
    final insertText = json['insertText'];
    final insertTextFormat =
        new InsertTextFormat.fromJson(json['insertTextFormat']);
    final textEdit = new TextEdit.fromJson(json['textEdit']);
    final additionalTextEdits = json['additionalTextEdits']
        ?.map((item) => new TextEdit.fromJson(item))
        ?.cast<TextEdit>()
        ?.toList();
    final commitCharacters =
        json['commitCharacters']?.map((item) => item)?.cast<String>()?.toList();
    final command = new Command.fromJson(json['command']);
    final data = json['data'];
    return new CompletionItem(
        label,
        kind,
        detail,
        documentation,
        deprecated,
        preselect,
        sortText,
        filterText,
        insertText,
        insertTextFormat,
        textEdit,
        additionalTextEdits,
        commitCharacters,
        command,
        data);
  }

  /// An optional array of additional text edits that are applied when selecting
  /// this completion. Edits must not overlap (including the same insert
  /// position) with the main edit nor with themselves.
  ///
  /// Additional text edits should be used to change text unrelated to the
  /// current cursor position (for example adding an import statement at the top
  /// of the file if the completion item will insert an unqualified type).
  final List<TextEdit> additionalTextEdits;

  /// An optional command that is executed *after* inserting this completion.
  /// *Note* that additional modifications to the current document should be
  /// described with the additionalTextEdits-property.
  final Command command;

  /// An optional set of characters that when pressed while this completion is
  /// active will accept it first and then type that character. *Note* that all
  /// commit characters should have `length=1` and that superfluous characters
  /// will be ignored.
  final List<String> commitCharacters;

  /// An data entry field that is preserved on a completion item between a
  /// completion and a completion resolve request.
  final dynamic data;

  /// Indicates if this item is deprecated.
  final bool deprecated;

  /// A human-readable string with additional information about this item, like
  /// type or symbol information.
  final String detail;

  /// A human-readable string that represents a doc-comment.
  final Either2<String, MarkupContent> documentation;

  /// A string that should be used when filtering a set of completion items.
  /// When `falsy` the label is used.
  final String filterText;

  /// A string that should be inserted into a document when selecting this
  /// completion. When `falsy` the label is used.
  ///
  /// The `insertText` is subject to interpretation by the client side. Some
  /// tools might not take the string literally. For example VS Code when code
  /// complete is requested in this example `con<cursor position>` and a
  /// completion item with an `insertText` of `console` is provided it will only
  /// insert `sole`. Therefore it is recommended to use `textEdit` instead since
  /// it avoids additional client side interpretation.
  ///  @deprecated Use textEdit instead.
  @core.deprecated
  final String insertText;

  /// The format of the insert text. The format applies to both the `insertText`
  /// property and the `newText` property of a provided `textEdit`.
  final InsertTextFormat insertTextFormat;

  /// The kind of this completion item. Based of the kind an icon is chosen by
  /// the editor.
  final CompletionItemKind kind;

  /// The label of this completion item. By default also the text that is
  /// inserted when selecting this completion.
  final String label;

  /// Select this item when showing.
  ///
  /// *Note* that only one completion item can be selected and that the tool /
  /// client decides which item that is. The rule is that the *first* item of
  /// those that match best is selected.
  final bool preselect;

  /// A string that should be used when comparing this item with other items.
  /// When `falsy` the label is used.
  final String sortText;

  /// An edit which is applied to a document when selecting this completion.
  /// When an edit is provided the value of `insertText` is ignored.
  ///
  /// *Note:* The range of the edit must be a single line range and it must
  /// contain the position at which completion has been requested.
  final TextEdit textEdit;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['label'] = label ?? (throw 'label is required but was not set');
    if (kind != null) {
      __result['kind'] = kind;
    }
    if (detail != null) {
      __result['detail'] = detail;
    }
    if (documentation != null) {
      __result['documentation'] = documentation;
    }
    if (deprecated != null) {
      __result['deprecated'] = deprecated;
    }
    if (preselect != null) {
      __result['preselect'] = preselect;
    }
    if (sortText != null) {
      __result['sortText'] = sortText;
    }
    if (filterText != null) {
      __result['filterText'] = filterText;
    }
    // ignore: deprecated_member_use
    if (insertText != null) {
      // ignore: deprecated_member_use
      __result['insertText'] = insertText;
    }
    if (insertTextFormat != null) {
      __result['insertTextFormat'] = insertTextFormat;
    }
    if (textEdit != null) {
      __result['textEdit'] = textEdit;
    }
    if (additionalTextEdits != null) {
      __result['additionalTextEdits'] = additionalTextEdits;
    }
    if (commitCharacters != null) {
      __result['commitCharacters'] = commitCharacters;
    }
    if (command != null) {
      __result['command'] = command;
    }
    if (data != null) {
      __result['data'] = data;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('label') &&
        obj['label'] is String;
  }
}

/// The kind of a completion entry.
class CompletionItemKind {
  const CompletionItemKind._(this._value);
  const CompletionItemKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
      case 4:
      case 5:
      case 6:
      case 7:
      case 8:
      case 9:
      case 10:
      case 11:
      case 12:
      case 13:
      case 14:
      case 15:
      case 16:
      case 17:
      case 18:
      case 19:
      case 20:
      case 21:
      case 22:
      case 23:
      case 24:
      case 25:
        return true;
    }
    return false;
  }

  static const Text = const CompletionItemKind._(1);
  static const Method = const CompletionItemKind._(2);
  static const Function = const CompletionItemKind._(3);
  static const Constructor = const CompletionItemKind._(4);
  static const Field = const CompletionItemKind._(5);
  static const Variable = const CompletionItemKind._(6);
  static const Class = const CompletionItemKind._(7);
  static const Interface = const CompletionItemKind._(8);
  static const Module = const CompletionItemKind._(9);
  static const Property = const CompletionItemKind._(10);
  static const Unit = const CompletionItemKind._(11);
  static const Value = const CompletionItemKind._(12);
  static const Enum = const CompletionItemKind._(13);
  static const Keyword = const CompletionItemKind._(14);
  static const Snippet = const CompletionItemKind._(15);
  static const Color = const CompletionItemKind._(16);
  static const File = const CompletionItemKind._(17);
  static const Reference = const CompletionItemKind._(18);
  static const Folder = const CompletionItemKind._(19);
  static const EnumMember = const CompletionItemKind._(20);
  static const Constant = const CompletionItemKind._(21);
  static const Struct = const CompletionItemKind._(22);
  static const Event = const CompletionItemKind._(23);
  static const Operator = const CompletionItemKind._(24);
  static const TypeParameter = const CompletionItemKind._(25);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is CompletionItemKind && o._value == _value;
}

/// Represents a collection of completion items ([CompletionItem]) to be
/// presented in the editor.
class CompletionList {
  CompletionList(this.isIncomplete, this.items) {
    if (isIncomplete == null) {
      throw 'isIncomplete is required but was not provided';
    }
    if (items == null) {
      throw 'items is required but was not provided';
    }
  }
  factory CompletionList.fromJson(Map<String, dynamic> json) {
    final isIncomplete = json['isIncomplete'];
    final items = json['items']
        ?.map((item) => new CompletionItem.fromJson(item))
        ?.cast<CompletionItem>()
        ?.toList();
    return new CompletionList(isIncomplete, items);
  }

  /// This list it not complete. Further typing should result in recomputing
  /// this list.
  final bool isIncomplete;

  /// The completion items.
  final List<CompletionItem> items;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['isIncomplete'] =
        isIncomplete ?? (throw 'isIncomplete is required but was not set');
    __result['items'] = items ?? (throw 'items is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('isIncomplete') &&
        obj['isIncomplete'] is bool &&
        obj.containsKey('items') &&
        (obj['items'] is List &&
            (obj['items'].length == 0 ||
                obj['items'].every((item) => CompletionItem.canParse(item))));
  }
}

/// Completion options.
class CompletionOptions {
  CompletionOptions(this.resolveProvider, this.triggerCharacters);
  factory CompletionOptions.fromJson(Map<String, dynamic> json) {
    final resolveProvider = json['resolveProvider'];
    final triggerCharacters = json['triggerCharacters']
        ?.map((item) => item)
        ?.cast<String>()
        ?.toList();
    return new CompletionOptions(resolveProvider, triggerCharacters);
  }

  /// The server provides support to resolve additional information for a
  /// completion item.
  final bool resolveProvider;

  /// The characters that trigger completion automatically.
  final List<String> triggerCharacters;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (resolveProvider != null) {
      __result['resolveProvider'] = resolveProvider;
    }
    if (triggerCharacters != null) {
      __result['triggerCharacters'] = triggerCharacters;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class CompletionParams implements TextDocumentPositionParams {
  CompletionParams(this.context, this.textDocument, this.position) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (position == null) {
      throw 'position is required but was not provided';
    }
  }
  factory CompletionParams.fromJson(Map<String, dynamic> json) {
    final context = new CompletionContext.fromJson(json['context']);
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final position = new Position.fromJson(json['position']);
    return new CompletionParams(context, textDocument, position);
  }

  /// The completion context. This is only available if the client specifies
  /// to send this using
  /// `ClientCapabilities.textDocument.completion.contextSupport === true`
  final CompletionContext context;

  /// The position inside the text document.
  final Position position;

  /// The text document.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (context != null) {
      __result['context'] = context;
    }
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['position'] =
        position ?? (throw 'position is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('position') &&
        Position.canParse(obj['position']);
  }
}

class CompletionRegistrationOptions implements TextDocumentRegistrationOptions {
  CompletionRegistrationOptions(
      this.triggerCharacters, this.resolveProvider, this.documentSelector);
  factory CompletionRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final triggerCharacters = json['triggerCharacters']
        ?.map((item) => item)
        ?.cast<String>()
        ?.toList();
    final resolveProvider = json['resolveProvider'];
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new CompletionRegistrationOptions(
        triggerCharacters, resolveProvider, documentSelector);
  }

  /// A document selector to identify the scope of the registration. If set to
  /// null the document selector provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  /// The server provides support to resolve additional information for a
  /// completion item.
  final bool resolveProvider;

  /// Most tools trigger completion request automatically without explicitly
  /// requesting it using a keyboard shortcut (e.g. Ctrl+Space). Typically
  /// they do so when the user starts to type an identifier. For example if
  /// the user types `c` in a JavaScript file code complete will automatically
  /// pop up present `console` besides others as a completion item. Characters
  /// that make up identifiers don't need to be listed here.
  ///
  /// If code complete should automatically be trigger on characters not being
  /// valid inside an identifier (for example `.` in JavaScript) list them in
  /// `triggerCharacters`.
  final List<String> triggerCharacters;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (triggerCharacters != null) {
      __result['triggerCharacters'] = triggerCharacters;
    }
    if (resolveProvider != null) {
      __result['resolveProvider'] = resolveProvider;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// How a completion was triggered
class CompletionTriggerKind {
  const CompletionTriggerKind._(this._value);
  const CompletionTriggerKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
        return true;
    }
    return false;
  }

  /// Completion was triggered by typing an identifier (24x7 code complete),
  /// manual invocation (e.g Ctrl+Space) or via API.
  static const Invoked = const CompletionTriggerKind._(1);

  /// Completion was triggered by a trigger character specified by the
  /// `triggerCharacters` properties of the `CompletionRegistrationOptions`.
  static const TriggerCharacter = const CompletionTriggerKind._(2);

  /// Completion was re-triggered as the current completion list is
  /// incomplete.
  static const TriggerForIncompleteCompletions =
      const CompletionTriggerKind._(3);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is CompletionTriggerKind && o._value == _value;
}

class ConfigurationItem {
  ConfigurationItem(this.scopeUri, this.section);
  factory ConfigurationItem.fromJson(Map<String, dynamic> json) {
    final scopeUri = json['scopeUri'];
    final section = json['section'];
    return new ConfigurationItem(scopeUri, section);
  }

  /// The scope to get the configuration section for.
  final String scopeUri;

  /// The configuration section asked for.
  final String section;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (scopeUri != null) {
      __result['scopeUri'] = scopeUri;
    }
    if (section != null) {
      __result['section'] = section;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class ConfigurationParams {
  ConfigurationParams(this.items) {
    if (items == null) {
      throw 'items is required but was not provided';
    }
  }
  factory ConfigurationParams.fromJson(Map<String, dynamic> json) {
    final items = json['items']
        ?.map((item) => new ConfigurationItem.fromJson(item))
        ?.cast<ConfigurationItem>()
        ?.toList();
    return new ConfigurationParams(items);
  }

  final List<ConfigurationItem> items;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['items'] = items ?? (throw 'items is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('items') &&
        (obj['items'] is List &&
            (obj['items'].length == 0 ||
                obj['items']
                    .every((item) => ConfigurationItem.canParse(item))));
  }
}

/// Create file operation
class CreateFile implements FileOperation {
  CreateFile(this.uri, this.options) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
  }
  factory CreateFile.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final options = new CreateFileOptions.fromJson(json['options']);
    return new CreateFile(uri, options);
  }

  /// Additional options
  final CreateFileOptions options;

  /// The resource to create.
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    if (options != null) {
      __result['options'] = options;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String;
  }
}

/// Options to create a file.
class CreateFileOptions {
  CreateFileOptions(this.overwrite, this.ignoreIfExists);
  factory CreateFileOptions.fromJson(Map<String, dynamic> json) {
    final overwrite = json['overwrite'];
    final ignoreIfExists = json['ignoreIfExists'];
    return new CreateFileOptions(overwrite, ignoreIfExists);
  }

  /// Ignore if exists.
  final bool ignoreIfExists;

  /// Overwrite existing file. Overwrite wins over `ignoreIfExists`
  final bool overwrite;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (overwrite != null) {
      __result['overwrite'] = overwrite;
    }
    if (ignoreIfExists != null) {
      __result['ignoreIfExists'] = ignoreIfExists;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// Delete file operation
class DeleteFile implements FileOperation {
  DeleteFile(this.uri, this.options) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
  }
  factory DeleteFile.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final options = new DeleteFileOptions.fromJson(json['options']);
    return new DeleteFile(uri, options);
  }

  /// Delete options.
  final DeleteFileOptions options;

  /// The file to delete.
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    if (options != null) {
      __result['options'] = options;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String;
  }
}

/// Delete file options
class DeleteFileOptions {
  DeleteFileOptions(this.recursive, this.ignoreIfNotExists);
  factory DeleteFileOptions.fromJson(Map<String, dynamic> json) {
    final recursive = json['recursive'];
    final ignoreIfNotExists = json['ignoreIfNotExists'];
    return new DeleteFileOptions(recursive, ignoreIfNotExists);
  }

  /// Ignore the operation if the file doesn't exist.
  final bool ignoreIfNotExists;

  /// Delete the content recursively if a folder is denoted.
  final bool recursive;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (recursive != null) {
      __result['recursive'] = recursive;
    }
    if (ignoreIfNotExists != null) {
      __result['ignoreIfNotExists'] = ignoreIfNotExists;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class Diagnostic {
  Diagnostic(this.range, this.severity, this.code, this.source, this.message,
      this.relatedInformation) {
    if (range == null) {
      throw 'range is required but was not provided';
    }
    if (message == null) {
      throw 'message is required but was not provided';
    }
  }
  factory Diagnostic.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final severity = new DiagnosticSeverity.fromJson(json['severity']);
    final code = json['code'] is num
        ? new Either2<num, String>.t1(json['code'])
        : (json['code'] is String
            ? new Either2<num, String>.t2(json['code'])
            : (throw '''${json['code']} was not one of (number, string)'''));
    final source = json['source'];
    final message = json['message'];
    final relatedInformation = json['relatedInformation']
        ?.map((item) => new DiagnosticRelatedInformation.fromJson(item))
        ?.cast<DiagnosticRelatedInformation>()
        ?.toList();
    return new Diagnostic(
        range, severity, code, source, message, relatedInformation);
  }

  /// The diagnostic's code, which might appear in the user interface.
  final Either2<num, String> code;

  /// The diagnostic's message.
  final String message;

  /// The range at which the message applies.
  final Range range;

  /// An array of related diagnostic information, e.g. when symbol-names
  /// within a scope collide all definitions can be marked via this
  /// property.
  final List<DiagnosticRelatedInformation> relatedInformation;

  /// The diagnostic's severity. Can be omitted. If omitted it is up to the
  /// client to interpret diagnostics as error, warning, info or hint.
  final DiagnosticSeverity severity;

  /// A human-readable string describing the source of this diagnostic, e.g.
  /// 'typescript' or 'super lint'.
  final String source;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['range'] = range ?? (throw 'range is required but was not set');
    if (severity != null) {
      __result['severity'] = severity;
    }
    if (code != null) {
      __result['code'] = code;
    }
    if (source != null) {
      __result['source'] = source;
    }
    __result['message'] =
        message ?? (throw 'message is required but was not set');
    if (relatedInformation != null) {
      __result['relatedInformation'] = relatedInformation;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']) &&
        obj.containsKey('message') &&
        obj['message'] is String;
  }
}

/// Represents a related message and source code location for a diagnostic.
/// This should be used to point to code locations that cause or related to
/// a diagnostics, e.g when duplicating a symbol in a scope.
class DiagnosticRelatedInformation {
  DiagnosticRelatedInformation(this.location, this.message) {
    if (location == null) {
      throw 'location is required but was not provided';
    }
    if (message == null) {
      throw 'message is required but was not provided';
    }
  }
  factory DiagnosticRelatedInformation.fromJson(Map<String, dynamic> json) {
    final location = new Location.fromJson(json['location']);
    final message = json['message'];
    return new DiagnosticRelatedInformation(location, message);
  }

  /// The location of this related diagnostic information.
  final Location location;

  /// The message of this related diagnostic information.
  final String message;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['location'] =
        location ?? (throw 'location is required but was not set');
    __result['message'] =
        message ?? (throw 'message is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('location') &&
        Location.canParse(obj['location']) &&
        obj.containsKey('message') &&
        obj['message'] is String;
  }
}

class DiagnosticSeverity {
  const DiagnosticSeverity._(this._value);
  const DiagnosticSeverity.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
      case 4:
        return true;
    }
    return false;
  }

  /// Reports an error.
  static const Error = const DiagnosticSeverity._(1);

  /// Reports a warning.
  static const Warning = const DiagnosticSeverity._(2);

  /// Reports an information.
  static const Information = const DiagnosticSeverity._(3);

  /// Reports a hint.
  static const Hint = const DiagnosticSeverity._(4);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is DiagnosticSeverity && o._value == _value;
}

class DidChangeConfigurationParams {
  DidChangeConfigurationParams(this.settings) {
    if (settings == null) {
      throw 'settings is required but was not provided';
    }
  }
  factory DidChangeConfigurationParams.fromJson(Map<String, dynamic> json) {
    final settings = json['settings'];
    return new DidChangeConfigurationParams(settings);
  }

  /// The actual changed settings
  final dynamic settings;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['settings'] =
        settings ?? (throw 'settings is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> && obj.containsKey('settings') && true;
  }
}

class DidChangeTextDocumentParams {
  DidChangeTextDocumentParams(this.textDocument, this.contentChanges) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (contentChanges == null) {
      throw 'contentChanges is required but was not provided';
    }
  }
  factory DidChangeTextDocumentParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new VersionedTextDocumentIdentifier.fromJson(json['textDocument']);
    final contentChanges = json['contentChanges']
        ?.map((item) => new TextDocumentContentChangeEvent.fromJson(item))
        ?.cast<TextDocumentContentChangeEvent>()
        ?.toList();
    return new DidChangeTextDocumentParams(textDocument, contentChanges);
  }

  /// The actual content changes. The content changes describe single
  /// state changes to the document. So if there are two content changes
  /// c1 and c2 for a document in state S then c1 move the document to S'
  /// and c2 to S''.
  final List<TextDocumentContentChangeEvent> contentChanges;

  /// The document that did change. The version number points to the
  /// version after all provided content changes have been applied.
  final VersionedTextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['contentChanges'] =
        contentChanges ?? (throw 'contentChanges is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        VersionedTextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('contentChanges') &&
        (obj['contentChanges'] is List &&
            (obj['contentChanges'].length == 0 ||
                obj['contentChanges'].every(
                    (item) => TextDocumentContentChangeEvent.canParse(item))));
  }
}

class DidChangeWatchedFilesParams {
  DidChangeWatchedFilesParams(this.changes) {
    if (changes == null) {
      throw 'changes is required but was not provided';
    }
  }
  factory DidChangeWatchedFilesParams.fromJson(Map<String, dynamic> json) {
    final changes = json['changes']
        ?.map((item) => new FileEvent.fromJson(item))
        ?.cast<FileEvent>()
        ?.toList();
    return new DidChangeWatchedFilesParams(changes);
  }

  /// The actual file events.
  final List<FileEvent> changes;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['changes'] =
        changes ?? (throw 'changes is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('changes') &&
        (obj['changes'] is List &&
            (obj['changes'].length == 0 ||
                obj['changes'].every((item) => FileEvent.canParse(item))));
  }
}

/// Describe options to be used when registering for text document change
/// events.
class DidChangeWatchedFilesRegistrationOptions {
  DidChangeWatchedFilesRegistrationOptions(this.watchers) {
    if (watchers == null) {
      throw 'watchers is required but was not provided';
    }
  }
  factory DidChangeWatchedFilesRegistrationOptions.fromJson(
      Map<String, dynamic> json) {
    final watchers = json['watchers']
        ?.map((item) => new FileSystemWatcher.fromJson(item))
        ?.cast<FileSystemWatcher>()
        ?.toList();
    return new DidChangeWatchedFilesRegistrationOptions(watchers);
  }

  /// The watchers to register.
  final List<FileSystemWatcher> watchers;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['watchers'] =
        watchers ?? (throw 'watchers is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('watchers') &&
        (obj['watchers'] is List &&
            (obj['watchers'].length == 0 ||
                obj['watchers']
                    .every((item) => FileSystemWatcher.canParse(item))));
  }
}

class DidChangeWorkspaceFoldersParams {
  DidChangeWorkspaceFoldersParams(this.event) {
    if (event == null) {
      throw 'event is required but was not provided';
    }
  }
  factory DidChangeWorkspaceFoldersParams.fromJson(Map<String, dynamic> json) {
    final event = new WorkspaceFoldersChangeEvent.fromJson(json['event']);
    return new DidChangeWorkspaceFoldersParams(event);
  }

  /// The actual workspace folder change event.
  final WorkspaceFoldersChangeEvent event;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['event'] = event ?? (throw 'event is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('event') &&
        WorkspaceFoldersChangeEvent.canParse(obj['event']);
  }
}

class DidCloseTextDocumentParams {
  DidCloseTextDocumentParams(this.textDocument) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory DidCloseTextDocumentParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    return new DidCloseTextDocumentParams(textDocument);
  }

  /// The document that was closed.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']);
  }
}

class DidOpenTextDocumentParams {
  DidOpenTextDocumentParams(this.textDocument) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory DidOpenTextDocumentParams.fromJson(Map<String, dynamic> json) {
    final textDocument = new TextDocumentItem.fromJson(json['textDocument']);
    return new DidOpenTextDocumentParams(textDocument);
  }

  /// The document that was opened.
  final TextDocumentItem textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentItem.canParse(obj['textDocument']);
  }
}

class DidSaveTextDocumentParams {
  DidSaveTextDocumentParams(this.textDocument, this.text) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory DidSaveTextDocumentParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final text = json['text'];
    return new DidSaveTextDocumentParams(textDocument, text);
  }

  /// Optional the content when saved. Depends on the includeText value
  /// when the save notification was requested.
  final String text;

  /// The document that was saved.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    if (text != null) {
      __result['text'] = text;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']);
  }
}

class DocumentFilter {
  DocumentFilter(this.language, this.scheme, this.pattern);
  factory DocumentFilter.fromJson(Map<String, dynamic> json) {
    final language = json['language'];
    final scheme = json['scheme'];
    final pattern = json['pattern'];
    return new DocumentFilter(language, scheme, pattern);
  }

  /// A language id, like `typescript`.
  final String language;

  /// A glob pattern, like `*.{ts,js}`.
  final String pattern;

  /// A Uri [scheme](#Uri.scheme), like `file` or `untitled`.
  final String scheme;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (language != null) {
      __result['language'] = language;
    }
    if (scheme != null) {
      __result['scheme'] = scheme;
    }
    if (pattern != null) {
      __result['pattern'] = pattern;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class DocumentFormattingParams {
  DocumentFormattingParams(this.textDocument, this.options) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (options == null) {
      throw 'options is required but was not provided';
    }
  }
  factory DocumentFormattingParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final options = new FormattingOptions.fromJson(json['options']);
    return new DocumentFormattingParams(textDocument, options);
  }

  /// The format options.
  final FormattingOptions options;

  /// The document to format.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['options'] =
        options ?? (throw 'options is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('options') &&
        FormattingOptions.canParse(obj['options']);
  }
}

/// A document highlight is a range inside a text document which deserves
/// special attention. Usually a document highlight is visualized by
/// changing the background color of its range.
class DocumentHighlight {
  DocumentHighlight(this.range, this.kind) {
    if (range == null) {
      throw 'range is required but was not provided';
    }
  }
  factory DocumentHighlight.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final kind = new DocumentHighlightKind.fromJson(json['kind']);
    return new DocumentHighlight(range, kind);
  }

  /// The highlight kind, default is DocumentHighlightKind.Text.
  final DocumentHighlightKind kind;

  /// The range this highlight applies to.
  final Range range;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['range'] = range ?? (throw 'range is required but was not set');
    if (kind != null) {
      __result['kind'] = kind;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']);
  }
}

/// A document highlight kind.
class DocumentHighlightKind {
  const DocumentHighlightKind._(this._value);
  const DocumentHighlightKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
        return true;
    }
    return false;
  }

  /// A textual occurrence.
  static const Text = const DocumentHighlightKind._(1);

  /// Read-access of a symbol, like reading a variable.
  static const Read = const DocumentHighlightKind._(2);

  /// Write-access of a symbol, like writing to a variable.
  static const Write = const DocumentHighlightKind._(3);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is DocumentHighlightKind && o._value == _value;
}

/// A document link is a range in a text document that links to an
/// internal or external resource, like another text document or a web
/// site.
class DocumentLink {
  DocumentLink(this.range, this.target, this.data) {
    if (range == null) {
      throw 'range is required but was not provided';
    }
  }
  factory DocumentLink.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final target = json['target'];
    final data = json['data'];
    return new DocumentLink(range, target, data);
  }

  /// A data entry field that is preserved on a document link between a
  /// DocumentLinkRequest and a DocumentLinkResolveRequest.
  final dynamic data;

  /// The range this link applies to.
  final Range range;

  /// The uri this link points to. If missing a resolve request is sent
  /// later.
  final String target;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['range'] = range ?? (throw 'range is required but was not set');
    if (target != null) {
      __result['target'] = target;
    }
    if (data != null) {
      __result['data'] = data;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']);
  }
}

/// Document link options.
class DocumentLinkOptions {
  DocumentLinkOptions(this.resolveProvider);
  factory DocumentLinkOptions.fromJson(Map<String, dynamic> json) {
    final resolveProvider = json['resolveProvider'];
    return new DocumentLinkOptions(resolveProvider);
  }

  /// Document links have a resolve provider as well.
  final bool resolveProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (resolveProvider != null) {
      __result['resolveProvider'] = resolveProvider;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class DocumentLinkParams {
  DocumentLinkParams(this.textDocument) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory DocumentLinkParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    return new DocumentLinkParams(textDocument);
  }

  /// The document to provide document links for.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']);
  }
}

class DocumentLinkRegistrationOptions
    implements TextDocumentRegistrationOptions {
  DocumentLinkRegistrationOptions(this.resolveProvider, this.documentSelector);
  factory DocumentLinkRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final resolveProvider = json['resolveProvider'];
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new DocumentLinkRegistrationOptions(
        resolveProvider, documentSelector);
  }

  /// A document selector to identify the scope of the registration. If
  /// set to null the document selector provided on the client side will
  /// be used.
  final List<DocumentFilter> documentSelector;

  /// Document links have a resolve provider as well.
  final bool resolveProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (resolveProvider != null) {
      __result['resolveProvider'] = resolveProvider;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// Format document on type options.
class DocumentOnTypeFormattingOptions {
  DocumentOnTypeFormattingOptions(
      this.firstTriggerCharacter, this.moreTriggerCharacter) {
    if (firstTriggerCharacter == null) {
      throw 'firstTriggerCharacter is required but was not provided';
    }
  }
  factory DocumentOnTypeFormattingOptions.fromJson(Map<String, dynamic> json) {
    final firstTriggerCharacter = json['firstTriggerCharacter'];
    final moreTriggerCharacter = json['moreTriggerCharacter']
        ?.map((item) => item)
        ?.cast<String>()
        ?.toList();
    return new DocumentOnTypeFormattingOptions(
        firstTriggerCharacter, moreTriggerCharacter);
  }

  /// A character on which formatting should be triggered, like `}`.
  final String firstTriggerCharacter;

  /// More trigger characters.
  final List<String> moreTriggerCharacter;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['firstTriggerCharacter'] = firstTriggerCharacter ??
        (throw 'firstTriggerCharacter is required but was not set');
    if (moreTriggerCharacter != null) {
      __result['moreTriggerCharacter'] = moreTriggerCharacter;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('firstTriggerCharacter') &&
        obj['firstTriggerCharacter'] is String;
  }
}

class DocumentOnTypeFormattingParams {
  DocumentOnTypeFormattingParams(
      this.textDocument, this.position, this.ch, this.options) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (position == null) {
      throw 'position is required but was not provided';
    }
    if (ch == null) {
      throw 'ch is required but was not provided';
    }
    if (options == null) {
      throw 'options is required but was not provided';
    }
  }
  factory DocumentOnTypeFormattingParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final position = new Position.fromJson(json['position']);
    final ch = json['ch'];
    final options = new FormattingOptions.fromJson(json['options']);
    return new DocumentOnTypeFormattingParams(
        textDocument, position, ch, options);
  }

  /// The character that has been typed.
  final String ch;

  /// The format options.
  final FormattingOptions options;

  /// The position at which this request was sent.
  final Position position;

  /// The document to format.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['position'] =
        position ?? (throw 'position is required but was not set');
    __result['ch'] = ch ?? (throw 'ch is required but was not set');
    __result['options'] =
        options ?? (throw 'options is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('position') &&
        Position.canParse(obj['position']) &&
        obj.containsKey('ch') &&
        obj['ch'] is String &&
        obj.containsKey('options') &&
        FormattingOptions.canParse(obj['options']);
  }
}

class DocumentOnTypeFormattingRegistrationOptions
    implements TextDocumentRegistrationOptions {
  DocumentOnTypeFormattingRegistrationOptions(this.firstTriggerCharacter,
      this.moreTriggerCharacter, this.documentSelector) {
    if (firstTriggerCharacter == null) {
      throw 'firstTriggerCharacter is required but was not provided';
    }
  }
  factory DocumentOnTypeFormattingRegistrationOptions.fromJson(
      Map<String, dynamic> json) {
    final firstTriggerCharacter = json['firstTriggerCharacter'];
    final moreTriggerCharacter = json['moreTriggerCharacter']
        ?.map((item) => item)
        ?.cast<String>()
        ?.toList();
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new DocumentOnTypeFormattingRegistrationOptions(
        firstTriggerCharacter, moreTriggerCharacter, documentSelector);
  }

  /// A document selector to identify the scope of the registration. If
  /// set to null the document selector provided on the client side will
  /// be used.
  final List<DocumentFilter> documentSelector;

  /// A character on which formatting should be triggered, like `}`.
  final String firstTriggerCharacter;

  /// More trigger characters.
  final List<String> moreTriggerCharacter;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['firstTriggerCharacter'] = firstTriggerCharacter ??
        (throw 'firstTriggerCharacter is required but was not set');
    if (moreTriggerCharacter != null) {
      __result['moreTriggerCharacter'] = moreTriggerCharacter;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('firstTriggerCharacter') &&
        obj['firstTriggerCharacter'] is String &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

class DocumentRangeFormattingParams {
  DocumentRangeFormattingParams(this.textDocument, this.range, this.options) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (range == null) {
      throw 'range is required but was not provided';
    }
    if (options == null) {
      throw 'options is required but was not provided';
    }
  }
  factory DocumentRangeFormattingParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final range = new Range.fromJson(json['range']);
    final options = new FormattingOptions.fromJson(json['options']);
    return new DocumentRangeFormattingParams(textDocument, range, options);
  }

  /// The format options
  final FormattingOptions options;

  /// The range to format
  final Range range;

  /// The document to format.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['range'] = range ?? (throw 'range is required but was not set');
    __result['options'] =
        options ?? (throw 'options is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']) &&
        obj.containsKey('options') &&
        FormattingOptions.canParse(obj['options']);
  }
}

/// Represents programming constructs like variables, classes,
/// interfaces etc. that appear in a document. Document symbols can be
/// hierarchical and they have two ranges: one that encloses its
/// definition and one that points to its most interesting range, e.g.
/// the range of an identifier.
class DocumentSymbol {
  DocumentSymbol(this.name, this.detail, this.kind, this.deprecated, this.range,
      this.selectionRange, this.children) {
    if (name == null) {
      throw 'name is required but was not provided';
    }
    if (kind == null) {
      throw 'kind is required but was not provided';
    }
    if (range == null) {
      throw 'range is required but was not provided';
    }
    if (selectionRange == null) {
      throw 'selectionRange is required but was not provided';
    }
  }
  factory DocumentSymbol.fromJson(Map<String, dynamic> json) {
    final name = json['name'];
    final detail = json['detail'];
    final kind = new SymbolKind.fromJson(json['kind']);
    final deprecated = json['deprecated'];
    final range = new Range.fromJson(json['range']);
    final selectionRange = new Range.fromJson(json['selectionRange']);
    final children = json['children']
        ?.map((item) => new DocumentSymbol.fromJson(item))
        ?.cast<DocumentSymbol>()
        ?.toList();
    return new DocumentSymbol(
        name, detail, kind, deprecated, range, selectionRange, children);
  }

  /// Children of this symbol, e.g. properties of a class.
  final List<DocumentSymbol> children;

  /// Indicates if this symbol is deprecated.
  final bool deprecated;

  /// More detail for this symbol, e.g the signature of a function.
  final String detail;

  /// The kind of this symbol.
  final SymbolKind kind;

  /// The name of this symbol.
  final String name;

  /// The range enclosing this symbol not including leading/trailing
  /// whitespace but everything else like comments. This information is
  /// typically used to determine if the clients cursor is inside the
  /// symbol to reveal in the symbol in the UI.
  final Range range;

  /// The range that should be selected and revealed when this symbol is
  /// being picked, e.g the name of a function. Must be contained by the
  /// `range`.
  final Range selectionRange;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['name'] = name ?? (throw 'name is required but was not set');
    if (detail != null) {
      __result['detail'] = detail;
    }
    __result['kind'] = kind ?? (throw 'kind is required but was not set');
    if (deprecated != null) {
      __result['deprecated'] = deprecated;
    }
    __result['range'] = range ?? (throw 'range is required but was not set');
    __result['selectionRange'] =
        selectionRange ?? (throw 'selectionRange is required but was not set');
    if (children != null) {
      __result['children'] = children;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('name') &&
        obj['name'] is String &&
        obj.containsKey('kind') &&
        SymbolKind.canParse(obj['kind']) &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']) &&
        obj.containsKey('selectionRange') &&
        Range.canParse(obj['selectionRange']);
  }
}

class DocumentSymbolParams {
  DocumentSymbolParams(this.textDocument) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory DocumentSymbolParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    return new DocumentSymbolParams(textDocument);
  }

  /// The text document.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']);
  }
}

abstract class ErrorCodes {
  static const InternalError = -32603;
  static const InvalidParams = -32602;
  static const InvalidRequest = -32600;
  static const MethodNotFound = -32601;
  static const ParseError = -32700;
  static const RequestCancelled = -32800;
  static const ServerNotInitialized = -32002;
  static const UnknownErrorCode = -32001;
  static const serverErrorEnd = -32000;
  static const serverErrorStart = -32099;
}

/// Execute command options.
class ExecuteCommandOptions {
  ExecuteCommandOptions(this.commands) {
    if (commands == null) {
      throw 'commands is required but was not provided';
    }
  }
  factory ExecuteCommandOptions.fromJson(Map<String, dynamic> json) {
    final commands =
        json['commands']?.map((item) => item)?.cast<String>()?.toList();
    return new ExecuteCommandOptions(commands);
  }

  /// The commands to be executed on the server
  final List<String> commands;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['commands'] =
        commands ?? (throw 'commands is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('commands') &&
        (obj['commands'] is List &&
            (obj['commands'].length == 0 ||
                obj['commands'].every((item) => item is String)));
  }
}

class ExecuteCommandParams {
  ExecuteCommandParams(this.command, this.arguments) {
    if (command == null) {
      throw 'command is required but was not provided';
    }
  }
  factory ExecuteCommandParams.fromJson(Map<String, dynamic> json) {
    final command = json['command'];
    final arguments =
        json['arguments']?.map((item) => item)?.cast<dynamic>()?.toList();
    return new ExecuteCommandParams(command, arguments);
  }

  /// Arguments that the command should be invoked with.
  final List<dynamic> arguments;

  /// The identifier of the actual command handler.
  final String command;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['command'] =
        command ?? (throw 'command is required but was not set');
    if (arguments != null) {
      __result['arguments'] = arguments;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('command') &&
        obj['command'] is String;
  }
}

/// Execute command registration options.
class ExecuteCommandRegistrationOptions {
  ExecuteCommandRegistrationOptions(this.commands) {
    if (commands == null) {
      throw 'commands is required but was not provided';
    }
  }
  factory ExecuteCommandRegistrationOptions.fromJson(
      Map<String, dynamic> json) {
    final commands =
        json['commands']?.map((item) => item)?.cast<String>()?.toList();
    return new ExecuteCommandRegistrationOptions(commands);
  }

  /// The commands to be executed on the server
  final List<String> commands;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['commands'] =
        commands ?? (throw 'commands is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('commands') &&
        (obj['commands'] is List &&
            (obj['commands'].length == 0 ||
                obj['commands'].every((item) => item is String)));
  }
}

class FailureHandlingKind {
  const FailureHandlingKind._(this._value);
  const FailureHandlingKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 'abort':
      case 'transactional':
      case 'textOnlyTransactional':
      case 'undo':
        return true;
    }
    return false;
  }

  /// Applying the workspace change is simply aborted if one of the
  /// changes provided fails. All operations executed before the
  /// failing operation stay executed.
  static const Abort = const FailureHandlingKind._('abort');

  /// All operations are executed transactional. That means they
  /// either all succeed or no changes at all are applied to the
  /// workspace.
  static const Transactional = const FailureHandlingKind._('transactional');

  /// If the workspace edit contains only textual file changes they
  /// are executed transactional. If resource changes (create, rename
  /// or delete file) are part of the change the failure handling
  /// startegy is abort.
  static const TextOnlyTransactional =
      const FailureHandlingKind._('textOnlyTransactional');

  /// The client tries to undo the operations already executed. But
  /// there is no guaruntee that this is succeeding.
  static const Undo = const FailureHandlingKind._('undo');

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is FailureHandlingKind && o._value == _value;
}

/// The file event type.
class FileChangeType {
  const FileChangeType._(this._value);
  const FileChangeType.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
        return true;
    }
    return false;
  }

  /// The file got created.
  static const Created = const FileChangeType._(1);

  /// The file got changed.
  static const Changed = const FileChangeType._(2);

  /// The file got deleted.
  static const Deleted = const FileChangeType._(3);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is FileChangeType && o._value == _value;
}

/// An event describing a file change.
class FileEvent {
  FileEvent(this.uri, this.type) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
    if (type == null) {
      throw 'type is required but was not provided';
    }
  }
  factory FileEvent.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final type = json['type'];
    return new FileEvent(uri, type);
  }

  /// The change type.
  final num type;

  /// The file's URI.
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    __result['type'] = type ?? (throw 'type is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String &&
        obj.containsKey('type') &&
        obj['type'] is num;
  }
}

class FileSystemWatcher {
  FileSystemWatcher(this.globPattern, this.kind) {
    if (globPattern == null) {
      throw 'globPattern is required but was not provided';
    }
  }
  factory FileSystemWatcher.fromJson(Map<String, dynamic> json) {
    final globPattern = json['globPattern'];
    final kind = new WatchKind.fromJson(json['kind']);
    return new FileSystemWatcher(globPattern, kind);
  }

  /// The  glob pattern to watch
  final String globPattern;

  /// The kind of events of interest. If omitted it defaults to
  /// WatchKind.Create | WatchKind.Change | WatchKind.Delete which
  /// is 7.
  final WatchKind kind;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['globPattern'] =
        globPattern ?? (throw 'globPattern is required but was not set');
    if (kind != null) {
      __result['kind'] = kind;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('globPattern') &&
        obj['globPattern'] is String;
  }
}

/// Represents a folding range.
class FoldingRange {
  FoldingRange(this.startLine, this.startCharacter, this.endLine,
      this.endCharacter, this.kind) {
    if (startLine == null) {
      throw 'startLine is required but was not provided';
    }
    if (endLine == null) {
      throw 'endLine is required but was not provided';
    }
  }
  factory FoldingRange.fromJson(Map<String, dynamic> json) {
    final startLine = json['startLine'];
    final startCharacter = json['startCharacter'];
    final endLine = json['endLine'];
    final endCharacter = json['endCharacter'];
    final kind = new FoldingRangeKind.fromJson(json['kind']);
    return new FoldingRange(
        startLine, startCharacter, endLine, endCharacter, kind);
  }

  /// The zero-based character offset before the folded range ends.
  /// If not defined, defaults to the length of the end line.
  final num endCharacter;

  /// The zero-based line number where the folded range ends.
  final num endLine;

  /// Describes the kind of the folding range such as `comment' or
  /// 'region'. The kind is used to categorize folding ranges and
  /// used by commands like 'Fold all comments'. See
  /// [FoldingRangeKind] for an enumeration of standardized kinds.
  final FoldingRangeKind kind;

  /// The zero-based character offset from where the folded range
  /// starts. If not defined, defaults to the length of the start
  /// line.
  final num startCharacter;

  /// The zero-based line number from where the folded range starts.
  final num startLine;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['startLine'] =
        startLine ?? (throw 'startLine is required but was not set');
    if (startCharacter != null) {
      __result['startCharacter'] = startCharacter;
    }
    __result['endLine'] =
        endLine ?? (throw 'endLine is required but was not set');
    if (endCharacter != null) {
      __result['endCharacter'] = endCharacter;
    }
    if (kind != null) {
      __result['kind'] = kind;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('startLine') &&
        obj['startLine'] is num &&
        obj.containsKey('endLine') &&
        obj['endLine'] is num;
  }
}

/// Enum of known range kinds
class FoldingRangeKind {
  const FoldingRangeKind._(this._value);
  const FoldingRangeKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 'comment':
      case 'imports':
      case 'region':
        return true;
    }
    return false;
  }

  /// Folding range for a comment
  static const Comment = const FoldingRangeKind._('comment');

  /// Folding range for a imports or includes
  static const Imports = const FoldingRangeKind._('imports');

  /// Folding range for a region (e.g. `#region`)
  static const Region = const FoldingRangeKind._('region');

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is FoldingRangeKind && o._value == _value;
}

class FoldingRangeParams {
  FoldingRangeParams(this.textDocument) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
  }
  factory FoldingRangeParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    return new FoldingRangeParams(textDocument);
  }

  /// The text document.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']);
  }
}

/// Folding range provider options.
class FoldingRangeProviderOptions {
  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// Value-object describing what options formatting should use.
class FormattingOptions {
  FormattingOptions(this.tabSize, this.insertSpaces) {
    if (tabSize == null) {
      throw 'tabSize is required but was not provided';
    }
    if (insertSpaces == null) {
      throw 'insertSpaces is required but was not provided';
    }
  }
  factory FormattingOptions.fromJson(Map<String, dynamic> json) {
    final tabSize = json['tabSize'];
    final insertSpaces = json['insertSpaces'];
    return new FormattingOptions(tabSize, insertSpaces);
  }

  /// Prefer spaces over tabs.
  final bool insertSpaces;

  /// Size of a tab in spaces.
  final num tabSize;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['tabSize'] =
        tabSize ?? (throw 'tabSize is required but was not set');
    __result['insertSpaces'] =
        insertSpaces ?? (throw 'insertSpaces is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('tabSize') &&
        obj['tabSize'] is num &&
        obj.containsKey('insertSpaces') &&
        obj['insertSpaces'] is bool;
  }
}

/// The result of a hover request.
class Hover {
  Hover(this.contents, this.range) {
    if (contents == null) {
      throw 'contents is required but was not provided';
    }
  }
  factory Hover.fromJson(Map<String, dynamic> json) {
    final contents = MarkedString.canParse(json['contents'])
        ? new Either3<MarkedString, List<MarkedString>, MarkupContent>.t1(
            new MarkedString.fromJson(json['contents']))
        : ((json['contents'] is List &&
                (json['contents'].length == 0 ||
                    json['contents']
                        .every((item) => MarkedString.canParse(item))))
            ? new Either3<MarkedString, List<MarkedString>, MarkupContent>.t2(
                json['contents']
                    ?.map((item) => new MarkedString.fromJson(item))
                    ?.cast<MarkedString>()
                    ?.toList())
            : (MarkupContent.canParse(json['contents'])
                ? new Either3<MarkedString, List<MarkedString>,
                        MarkupContent>.t3(
                    new MarkupContent.fromJson(json['contents']))
                : (throw '''${json['contents']} was not one of (MarkedString, MarkedString[], MarkupContent)''')));
    final range = new Range.fromJson(json['range']);
    return new Hover(contents, range);
  }

  /// The hover's content
  final Either3<MarkedString, List<MarkedString>, MarkupContent> contents;

  /// An optional range is a range inside a text document that is
  /// used to visualize a hover, e.g. by changing the background
  /// color.
  final Range range;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['contents'] =
        contents ?? (throw 'contents is required but was not set');
    if (range != null) {
      __result['range'] = range;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('contents') &&
        (MarkedString.canParse(obj['contents']) ||
            (obj['contents'] is List &&
                (obj['contents'].length == 0 ||
                    obj['contents']
                        .every((item) => MarkedString.canParse(item)))) ||
            MarkupContent.canParse(obj['contents']));
  }
}

class InitializeParams {
  InitializeParams(this.processId, this.rootPath, this.rootUri,
      this.initializationOptions, this.capabilities, this.workspaceFolders) {
    if (capabilities == null) {
      throw 'capabilities is required but was not provided';
    }
  }
  factory InitializeParams.fromJson(Map<String, dynamic> json) {
    final processId = json['processId'];
    final rootPath = json['rootPath'];
    final rootUri = json['rootUri'];
    final initializationOptions = json['initializationOptions'];
    final capabilities = new ClientCapabilities.fromJson(json['capabilities']);
    final workspaceFolders = json['workspaceFolders']
        ?.map((item) => new WorkspaceFolder.fromJson(item))
        ?.cast<WorkspaceFolder>()
        ?.toList();
    return new InitializeParams(processId, rootPath, rootUri,
        initializationOptions, capabilities, workspaceFolders);
  }

  /// The capabilities provided by the client (editor or tool)
  final ClientCapabilities capabilities;

  /// User provided initialization options.
  final dynamic initializationOptions;

  /// The process Id of the parent process that started the
  /// server. Is null if the process has not been started by
  /// another process. If the parent process is not alive then the
  /// server should exit (see exit notification) its process.
  final num processId;

  /// The rootPath of the workspace. Is null if no folder is open.
  ///  @deprecated in favour of rootUri.
  @core.deprecated
  final String rootPath;

  /// The rootUri of the workspace. Is null if no folder is open.
  /// If both `rootPath` and `rootUri` are set `rootUri` wins.
  final String rootUri;

  /// The workspace folders configured in the client when the
  /// server starts. This property is only available if the client
  /// supports workspace folders. It can be `null` if the client
  /// supports workspace folders but none are configured.
  ///
  /// Since 3.6.0
  final List<WorkspaceFolder> workspaceFolders;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['processId'] = processId;
    // ignore: deprecated_member_use
    if (rootPath != null) {
      // ignore: deprecated_member_use
      __result['rootPath'] = rootPath;
    }
    __result['rootUri'] = rootUri;
    if (initializationOptions != null) {
      __result['initializationOptions'] = initializationOptions;
    }
    __result['capabilities'] =
        capabilities ?? (throw 'capabilities is required but was not set');
    if (workspaceFolders != null) {
      __result['workspaceFolders'] = workspaceFolders;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('processId') &&
        obj['processId'] is num &&
        obj.containsKey('rootUri') &&
        obj['rootUri'] is String &&
        obj.containsKey('capabilities') &&
        ClientCapabilities.canParse(obj['capabilities']);
  }
}

class InitializeResult {
  InitializeResult(this.capabilities) {
    if (capabilities == null) {
      throw 'capabilities is required but was not provided';
    }
  }
  factory InitializeResult.fromJson(Map<String, dynamic> json) {
    final capabilities = new ServerCapabilities.fromJson(json['capabilities']);
    return new InitializeResult(capabilities);
  }

  /// The capabilities the language server provides.
  final ServerCapabilities capabilities;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['capabilities'] =
        capabilities ?? (throw 'capabilities is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('capabilities') &&
        ServerCapabilities.canParse(obj['capabilities']);
  }
}

class InitializedParams {
  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// Defines whether the insert text in a completion item should be
/// interpreted as plain text or a snippet.
class InsertTextFormat {
  const InsertTextFormat._(this._value);
  const InsertTextFormat.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
        return true;
    }
    return false;
  }

  /// The primary text to be inserted is treated as a plain
  /// string.
  static const PlainText = const InsertTextFormat._(1);

  /// The primary text to be inserted is treated as a snippet.
  ///
  /// A snippet can define tab stops and placeholders with `$1`,
  /// `$2` and `${3:foo}`. `$0` defines the final tab stop, it
  /// defaults to the end of the snippet. Placeholders with
  /// equal identifiers are linked, that is typing in one will
  /// update others too.
  static const Snippet = const InsertTextFormat._(2);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is InsertTextFormat && o._value == _value;
}

class Location {
  Location(this.uri, this.range) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
    if (range == null) {
      throw 'range is required but was not provided';
    }
  }
  factory Location.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final range = new Range.fromJson(json['range']);
    return new Location(uri, range);
  }

  final Range range;
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    __result['range'] = range ?? (throw 'range is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']);
  }
}

class LogMessageParams {
  LogMessageParams(this.type, this.message) {
    if (type == null) {
      throw 'type is required but was not provided';
    }
    if (message == null) {
      throw 'message is required but was not provided';
    }
  }
  factory LogMessageParams.fromJson(Map<String, dynamic> json) {
    final type = new MessageType.fromJson(json['type']);
    final message = json['message'];
    return new LogMessageParams(type, message);
  }

  /// The actual message
  final String message;

  /// The message type.
  final MessageType type;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['type'] = type ?? (throw 'type is required but was not set');
    __result['message'] =
        message ?? (throw 'message is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('type') &&
        MessageType.canParse(obj['type']) &&
        obj.containsKey('message') &&
        obj['message'] is String;
  }
}

class MarkedString {
  MarkedString(this.language, this.value) {
    if (language == null) {
      throw 'language is required but was not provided';
    }
    if (value == null) {
      throw 'value is required but was not provided';
    }
  }
  factory MarkedString.fromJson(Map<String, dynamic> json) {
    final language = json['language'];
    final value = json['value'];
    return new MarkedString(language, value);
  }

  final String language;
  final String value;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['language'] =
        language ?? (throw 'language is required but was not set');
    __result['value'] = value ?? (throw 'value is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('language') &&
        obj['language'] is String &&
        obj.containsKey('value') &&
        obj['value'] is String;
  }
}

/// A `MarkupContent` literal represents a string value which
/// content is interpreted base on its kind flag. Currently the
/// protocol supports `plaintext` and `markdown` as markup
/// kinds.
///
/// If the kind is `markdown` then the value can contain fenced
/// code blocks like in GitHub issues. See
/// https://help.github.com/articles/creating-and-highlighting-code-blocks/#syntax-highlighting
///
/// Here is an example how such a string can be constructed
/// using JavaScript / TypeScript: ```ts let markdown:
/// MarkdownContent = {
///
/// kind: MarkupKind.Markdown,
/// 	value: [
/// 		'# Header',
/// 		'Some text',
/// 		'```typescript',
/// 		'someCode();',
/// 		'```'
/// 	].join('\n') }; ```
///
/// *Please Note* that clients might sanitize the return
/// markdown. A client could decide to remove HTML from the
/// markdown to avoid script execution.
class MarkupContent {
  MarkupContent(this.kind, this.value) {
    if (kind == null) {
      throw 'kind is required but was not provided';
    }
    if (value == null) {
      throw 'value is required but was not provided';
    }
  }
  factory MarkupContent.fromJson(Map<String, dynamic> json) {
    final kind = new MarkupKind.fromJson(json['kind']);
    final value = json['value'];
    return new MarkupContent(kind, value);
  }

  /// The type of the Markup
  final MarkupKind kind;

  /// The content itself
  final String value;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['kind'] = kind ?? (throw 'kind is required but was not set');
    __result['value'] = value ?? (throw 'value is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('kind') &&
        MarkupKind.canParse(obj['kind']) &&
        obj.containsKey('value') &&
        obj['value'] is String;
  }
}

/// Describes the content type that a client supports in various
/// result literals like `Hover`, `ParameterInfo` or
/// `CompletionItem`.
///
/// Please note that `MarkupKinds` must not start with a `$`.
/// This kinds are reserved for internal usage.
class MarkupKind {
  const MarkupKind._(this._value);
  const MarkupKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 'plaintext':
      case 'markdown':
        return true;
    }
    return false;
  }

  /// Plain text is supported as a content format
  static const PlainText = const MarkupKind._('plaintext');

  /// Markdown is supported as a content format
  static const Markdown = const MarkupKind._('markdown');

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is MarkupKind && o._value == _value;
}

class Message {
  Message(this.jsonrpc) {
    if (jsonrpc == null) {
      throw 'jsonrpc is required but was not provided';
    }
  }
  factory Message.fromJson(Map<String, dynamic> json) {
    final jsonrpc = json['jsonrpc'];
    return new Message(jsonrpc);
  }

  final String jsonrpc;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['jsonrpc'] =
        jsonrpc ?? (throw 'jsonrpc is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('jsonrpc') &&
        obj['jsonrpc'] is String;
  }
}

class MessageActionItem {
  MessageActionItem(this.title) {
    if (title == null) {
      throw 'title is required but was not provided';
    }
  }
  factory MessageActionItem.fromJson(Map<String, dynamic> json) {
    final title = json['title'];
    return new MessageActionItem(title);
  }

  /// A short title like 'Retry', 'Open Log' etc.
  final String title;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['title'] = title ?? (throw 'title is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('title') &&
        obj['title'] is String;
  }
}

class MessageType {
  const MessageType._(this._value);
  const MessageType.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
      case 4:
        return true;
    }
    return false;
  }

  /// An error message.
  static const Error = const MessageType._(1);

  /// A warning message.
  static const Warning = const MessageType._(2);

  /// An information message.
  static const Info = const MessageType._(3);

  /// A log message.
  static const Log = const MessageType._(4);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is MessageType && o._value == _value;
}

class NotificationMessage implements Message {
  NotificationMessage(this.method, this.jsonrpc) {
    if (method == null) {
      throw 'method is required but was not provided';
    }
    if (jsonrpc == null) {
      throw 'jsonrpc is required but was not provided';
    }
  }
  factory NotificationMessage.fromJson(Map<String, dynamic> json) {
    final method = json['method'];
    final jsonrpc = json['jsonrpc'];
    return new NotificationMessage(method, jsonrpc);
  }

  final String jsonrpc;

  /// The method to be invoked.
  final String method;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['method'] = method ?? (throw 'method is required but was not set');
    __result['jsonrpc'] =
        jsonrpc ?? (throw 'jsonrpc is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('method') &&
        obj['method'] is String &&
        obj.containsKey('jsonrpc') &&
        obj['jsonrpc'] is String;
  }
}

/// Represents a parameter of a callable-signature. A
/// parameter can have a label and a doc-comment.
class ParameterInformation {
  ParameterInformation(this.label, this.documentation) {
    if (label == null) {
      throw 'label is required but was not provided';
    }
  }
  factory ParameterInformation.fromJson(Map<String, dynamic> json) {
    final label = json['label'];
    final documentation = json['documentation'] is String
        ? new Either2<String, MarkupContent>.t1(json['documentation'])
        : (MarkupContent.canParse(json['documentation'])
            ? new Either2<String, MarkupContent>.t2(
                new MarkupContent.fromJson(json['documentation']))
            : (throw '''${json['documentation']} was not one of (string, MarkupContent)'''));
    return new ParameterInformation(label, documentation);
  }

  /// The human-readable doc-comment of this parameter. Will
  /// be shown in the UI but can be omitted.
  final Either2<String, MarkupContent> documentation;

  /// The label of this parameter. Will be shown in the UI.
  final String label;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['label'] = label ?? (throw 'label is required but was not set');
    if (documentation != null) {
      __result['documentation'] = documentation;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('label') &&
        obj['label'] is String;
  }
}

class Position {
  Position(this.line, this.character) {
    if (line == null) {
      throw 'line is required but was not provided';
    }
    if (character == null) {
      throw 'character is required but was not provided';
    }
  }
  factory Position.fromJson(Map<String, dynamic> json) {
    final line = json['line'];
    final character = json['character'];
    return new Position(line, character);
  }

  /// Character offset on a line in a document (zero-based).
  /// Assuming that the line is represented as a string, the
  /// `character` value represents the gap between the
  /// `character` and `character + 1`.
  ///
  /// If the character value is greater than the line length
  /// it defaults back to the line length.
  final num character;

  /// Line position in a document (zero-based).
  final num line;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['line'] = line ?? (throw 'line is required but was not set');
    __result['character'] =
        character ?? (throw 'character is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('line') &&
        obj['line'] is num &&
        obj.containsKey('character') &&
        obj['character'] is num;
  }
}

class PublishDiagnosticsParams {
  PublishDiagnosticsParams(this.uri, this.diagnostics) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
    if (diagnostics == null) {
      throw 'diagnostics is required but was not provided';
    }
  }
  factory PublishDiagnosticsParams.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final diagnostics = json['diagnostics']
        ?.map((item) => new Diagnostic.fromJson(item))
        ?.cast<Diagnostic>()
        ?.toList();
    return new PublishDiagnosticsParams(uri, diagnostics);
  }

  /// An array of diagnostic information items.
  final List<Diagnostic> diagnostics;

  /// The URI for which diagnostic information is reported.
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    __result['diagnostics'] =
        diagnostics ?? (throw 'diagnostics is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String &&
        obj.containsKey('diagnostics') &&
        (obj['diagnostics'] is List &&
            (obj['diagnostics'].length == 0 ||
                obj['diagnostics'].every((item) => Diagnostic.canParse(item))));
  }
}

class Range {
  Range(this.start, this.end) {
    if (start == null) {
      throw 'start is required but was not provided';
    }
    if (end == null) {
      throw 'end is required but was not provided';
    }
  }
  factory Range.fromJson(Map<String, dynamic> json) {
    final start = new Position.fromJson(json['start']);
    final end = new Position.fromJson(json['end']);
    return new Range(start, end);
  }

  /// The range's end position.
  final Position end;

  /// The range's start position.
  final Position start;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['start'] = start ?? (throw 'start is required but was not set');
    __result['end'] = end ?? (throw 'end is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('start') &&
        Position.canParse(obj['start']) &&
        obj.containsKey('end') &&
        Position.canParse(obj['end']);
  }
}

class ReferenceContext {
  ReferenceContext(this.includeDeclaration) {
    if (includeDeclaration == null) {
      throw 'includeDeclaration is required but was not provided';
    }
  }
  factory ReferenceContext.fromJson(Map<String, dynamic> json) {
    final includeDeclaration = json['includeDeclaration'];
    return new ReferenceContext(includeDeclaration);
  }

  /// Include the declaration of the current symbol.
  final bool includeDeclaration;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['includeDeclaration'] = includeDeclaration ??
        (throw 'includeDeclaration is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('includeDeclaration') &&
        obj['includeDeclaration'] is bool;
  }
}

class ReferenceParams implements TextDocumentPositionParams {
  ReferenceParams(this.context, this.textDocument, this.position) {
    if (context == null) {
      throw 'context is required but was not provided';
    }
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (position == null) {
      throw 'position is required but was not provided';
    }
  }
  factory ReferenceParams.fromJson(Map<String, dynamic> json) {
    final context = new ReferenceContext.fromJson(json['context']);
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final position = new Position.fromJson(json['position']);
    return new ReferenceParams(context, textDocument, position);
  }

  final ReferenceContext context;

  /// The position inside the text document.
  final Position position;

  /// The text document.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['context'] =
        context ?? (throw 'context is required but was not set');
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['position'] =
        position ?? (throw 'position is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('context') &&
        ReferenceContext.canParse(obj['context']) &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('position') &&
        Position.canParse(obj['position']);
  }
}

/// General parameters to register for a capability.
class Registration {
  Registration(this.id, this.method, this.registerOptions) {
    if (id == null) {
      throw 'id is required but was not provided';
    }
    if (method == null) {
      throw 'method is required but was not provided';
    }
  }
  factory Registration.fromJson(Map<String, dynamic> json) {
    final id = json['id'];
    final method = json['method'];
    final registerOptions = json['registerOptions'];
    return new Registration(id, method, registerOptions);
  }

  /// The id used to register the request. The id can be
  /// used to deregister the request again.
  final String id;

  /// The method / capability to register for.
  final String method;

  /// Options necessary for the registration.
  final dynamic registerOptions;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['id'] = id ?? (throw 'id is required but was not set');
    __result['method'] = method ?? (throw 'method is required but was not set');
    if (registerOptions != null) {
      __result['registerOptions'] = registerOptions;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('id') &&
        obj['id'] is String &&
        obj.containsKey('method') &&
        obj['method'] is String;
  }
}

class RegistrationParams {
  RegistrationParams(this.registrations) {
    if (registrations == null) {
      throw 'registrations is required but was not provided';
    }
  }
  factory RegistrationParams.fromJson(Map<String, dynamic> json) {
    final registrations = json['registrations']
        ?.map((item) => new Registration.fromJson(item))
        ?.cast<Registration>()
        ?.toList();
    return new RegistrationParams(registrations);
  }

  final List<Registration> registrations;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['registrations'] =
        registrations ?? (throw 'registrations is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('registrations') &&
        (obj['registrations'] is List &&
            (obj['registrations'].length == 0 ||
                obj['registrations']
                    .every((item) => Registration.canParse(item))));
  }
}

/// Rename file operation
class RenameFile implements FileOperation {
  RenameFile(this.oldUri, this.newUri, this.options) {
    if (oldUri == null) {
      throw 'oldUri is required but was not provided';
    }
    if (newUri == null) {
      throw 'newUri is required but was not provided';
    }
  }
  factory RenameFile.fromJson(Map<String, dynamic> json) {
    final oldUri = json['oldUri'];
    final newUri = json['newUri'];
    final options = new RenameFileOptions.fromJson(json['options']);
    return new RenameFile(oldUri, newUri, options);
  }

  /// The new location.
  final String newUri;

  /// The old (existing) location.
  final String oldUri;

  /// Rename options.
  final RenameFileOptions options;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['oldUri'] = oldUri ?? (throw 'oldUri is required but was not set');
    __result['newUri'] = newUri ?? (throw 'newUri is required but was not set');
    if (options != null) {
      __result['options'] = options;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('oldUri') &&
        obj['oldUri'] is String &&
        obj.containsKey('newUri') &&
        obj['newUri'] is String;
  }
}

/// Rename file options
class RenameFileOptions {
  RenameFileOptions(this.overwrite, this.ignoreIfExists);
  factory RenameFileOptions.fromJson(Map<String, dynamic> json) {
    final overwrite = json['overwrite'];
    final ignoreIfExists = json['ignoreIfExists'];
    return new RenameFileOptions(overwrite, ignoreIfExists);
  }

  /// Ignores if target exists.
  final bool ignoreIfExists;

  /// Overwrite target if existing. Overwrite wins over
  /// `ignoreIfExists`
  final bool overwrite;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (overwrite != null) {
      __result['overwrite'] = overwrite;
    }
    if (ignoreIfExists != null) {
      __result['ignoreIfExists'] = ignoreIfExists;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// Rename options
class RenameOptions {
  RenameOptions(this.prepareProvider);
  factory RenameOptions.fromJson(Map<String, dynamic> json) {
    final prepareProvider = json['prepareProvider'];
    return new RenameOptions(prepareProvider);
  }

  /// Renames should be checked and tested before being
  /// executed.
  final bool prepareProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (prepareProvider != null) {
      __result['prepareProvider'] = prepareProvider;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class RenameParams {
  RenameParams(this.textDocument, this.position, this.newName) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (position == null) {
      throw 'position is required but was not provided';
    }
    if (newName == null) {
      throw 'newName is required but was not provided';
    }
  }
  factory RenameParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final position = new Position.fromJson(json['position']);
    final newName = json['newName'];
    return new RenameParams(textDocument, position, newName);
  }

  /// The new name of the symbol. If the given name is not
  /// valid the request must return a [ResponseError] with
  /// an appropriate message set.
  final String newName;

  /// The position at which this request was sent.
  final Position position;

  /// The document to rename.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['position'] =
        position ?? (throw 'position is required but was not set');
    __result['newName'] =
        newName ?? (throw 'newName is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('position') &&
        Position.canParse(obj['position']) &&
        obj.containsKey('newName') &&
        obj['newName'] is String;
  }
}

class RenameRegistrationOptions implements TextDocumentRegistrationOptions {
  RenameRegistrationOptions(this.prepareProvider, this.documentSelector);
  factory RenameRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final prepareProvider = json['prepareProvider'];
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new RenameRegistrationOptions(prepareProvider, documentSelector);
  }

  /// A document selector to identify the scope of the
  /// registration. If set to null the document selector
  /// provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  /// Renames should be checked and tested for validity
  /// before being executed.
  final bool prepareProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (prepareProvider != null) {
      __result['prepareProvider'] = prepareProvider;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

class RequestMessage implements Message {
  RequestMessage(this.id, this.method, this.jsonrpc) {
    if (id == null) {
      throw 'id is required but was not provided';
    }
    if (method == null) {
      throw 'method is required but was not provided';
    }
    if (jsonrpc == null) {
      throw 'jsonrpc is required but was not provided';
    }
  }
  factory RequestMessage.fromJson(Map<String, dynamic> json) {
    final id = json['id'] is num
        ? new Either2<num, String>.t1(json['id'])
        : (json['id'] is String
            ? new Either2<num, String>.t2(json['id'])
            : (throw '''${json['id']} was not one of (number, string)'''));
    final method = json['method'];
    final jsonrpc = json['jsonrpc'];
    return new RequestMessage(id, method, jsonrpc);
  }

  /// The request id.
  final Either2<num, String> id;
  final String jsonrpc;

  /// The method to be invoked.
  final String method;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['id'] = id ?? (throw 'id is required but was not set');
    __result['method'] = method ?? (throw 'method is required but was not set');
    __result['jsonrpc'] =
        jsonrpc ?? (throw 'jsonrpc is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('id') &&
        (obj['id'] is num || obj['id'] is String) &&
        obj.containsKey('method') &&
        obj['method'] is String &&
        obj.containsKey('jsonrpc') &&
        obj['jsonrpc'] is String;
  }
}

class ResourceOperationKind {
  const ResourceOperationKind._(this._value);
  const ResourceOperationKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 'create':
      case 'rename':
      case 'delete':
        return true;
    }
    return false;
  }

  /// Supports creating new files and folders.
  static const Create = const ResourceOperationKind._('create');

  /// Supports renaming existing files and folders.
  static const Rename = const ResourceOperationKind._('rename');

  /// Supports deleting existing files and folders.
  static const Delete = const ResourceOperationKind._('delete');

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is ResourceOperationKind && o._value == _value;
}

class ResponseMessage implements Message {
  ResponseMessage(this.id, this.result, this.jsonrpc) {
    if (jsonrpc == null) {
      throw 'jsonrpc is required but was not provided';
    }
  }
  factory ResponseMessage.fromJson(Map<String, dynamic> json) {
    final id = json['id'] is num
        ? new Either2<num, String>.t1(json['id'])
        : (json['id'] is String
            ? new Either2<num, String>.t2(json['id'])
            : (throw '''${json['id']} was not one of (number, string)'''));
    final result = json['result'];
    final jsonrpc = json['jsonrpc'];
    return new ResponseMessage(id, result, jsonrpc);
  }

  /// The request id.
  final Either2<num, String> id;
  final String jsonrpc;

  /// The result of a request. This can be omitted in the
  /// case of an error.
  final dynamic result;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['id'] = id;
    if (result != null) {
      __result['result'] = result;
    }
    __result['jsonrpc'] =
        jsonrpc ?? (throw 'jsonrpc is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('id') &&
        (obj['id'] is num || obj['id'] is String) &&
        obj.containsKey('jsonrpc') &&
        obj['jsonrpc'] is String;
  }
}

/// Save options.
class SaveOptions {
  SaveOptions(this.includeText);
  factory SaveOptions.fromJson(Map<String, dynamic> json) {
    final includeText = json['includeText'];
    return new SaveOptions(includeText);
  }

  /// The client is supposed to include the content on
  /// save.
  final bool includeText;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (includeText != null) {
      __result['includeText'] = includeText;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class ServerCapabilities {
  ServerCapabilities(
      this.textDocumentSync,
      this.hoverProvider,
      this.completionProvider,
      this.signatureHelpProvider,
      this.definitionProvider,
      this.referencesProvider,
      this.documentHighlightProvider,
      this.documentSymbolProvider,
      this.workspaceSymbolProvider,
      this.codeActionProvider,
      this.codeLensProvider,
      this.documentFormattingProvider,
      this.documentRangeFormattingProvider,
      this.documentOnTypeFormattingProvider,
      this.renameProvider,
      this.documentLinkProvider,
      this.executeCommandProvider,
      this.supported,
      this.changeNotifications);
  factory ServerCapabilities.fromJson(Map<String, dynamic> json) {
    final textDocumentSync = TextDocumentSyncOptions.canParse(
            json['textDocumentSync'])
        ? new Either2<TextDocumentSyncOptions, num>.t1(
            new TextDocumentSyncOptions.fromJson(json['textDocumentSync']))
        : (json['textDocumentSync'] is num
            ? new Either2<TextDocumentSyncOptions, num>.t2(
                json['textDocumentSync'])
            : (throw '''${json['textDocumentSync']} was not one of (TextDocumentSyncOptions, number)'''));
    final hoverProvider = json['hoverProvider'];
    final completionProvider =
        new CompletionOptions.fromJson(json['completionProvider']);
    final signatureHelpProvider =
        new SignatureHelpOptions.fromJson(json['signatureHelpProvider']);
    final definitionProvider = json['definitionProvider'];
    final referencesProvider = json['referencesProvider'];
    final documentHighlightProvider = json['documentHighlightProvider'];
    final documentSymbolProvider = json['documentSymbolProvider'];
    final workspaceSymbolProvider = json['workspaceSymbolProvider'];
    final codeActionProvider = json['codeActionProvider'] is bool
        ? new Either2<bool, CodeActionOptions>.t1(json['codeActionProvider'])
        : (CodeActionOptions.canParse(json['codeActionProvider'])
            ? new Either2<bool, CodeActionOptions>.t2(
                new CodeActionOptions.fromJson(json['codeActionProvider']))
            : (throw '''${json['codeActionProvider']} was not one of (boolean, CodeActionOptions)'''));
    final codeLensProvider =
        new CodeLensOptions.fromJson(json['codeLensProvider']);
    final documentFormattingProvider = json['documentFormattingProvider'];
    final documentRangeFormattingProvider =
        json['documentRangeFormattingProvider'];
    final documentOnTypeFormattingProvider =
        new DocumentOnTypeFormattingOptions.fromJson(
            json['documentOnTypeFormattingProvider']);
    final renameProvider = json['renameProvider'] is bool
        ? new Either2<bool, RenameOptions>.t1(json['renameProvider'])
        : (RenameOptions.canParse(json['renameProvider'])
            ? new Either2<bool, RenameOptions>.t2(
                new RenameOptions.fromJson(json['renameProvider']))
            : (throw '''${json['renameProvider']} was not one of (boolean, RenameOptions)'''));
    final documentLinkProvider =
        new DocumentLinkOptions.fromJson(json['documentLinkProvider']);
    final executeCommandProvider =
        new ExecuteCommandOptions.fromJson(json['executeCommandProvider']);
    final supported = json['supported'];
    final changeNotifications = json['changeNotifications'] is String
        ? new Either2<String, bool>.t1(json['changeNotifications'])
        : (json['changeNotifications'] is bool
            ? new Either2<String, bool>.t2(json['changeNotifications'])
            : (throw '''${json['changeNotifications']} was not one of (string, boolean)'''));
    return new ServerCapabilities(
        textDocumentSync,
        hoverProvider,
        completionProvider,
        signatureHelpProvider,
        definitionProvider,
        referencesProvider,
        documentHighlightProvider,
        documentSymbolProvider,
        workspaceSymbolProvider,
        codeActionProvider,
        codeLensProvider,
        documentFormattingProvider,
        documentRangeFormattingProvider,
        documentOnTypeFormattingProvider,
        renameProvider,
        documentLinkProvider,
        executeCommandProvider,
        supported,
        changeNotifications);
  }

  /// Whether the server wants to receive workspace folder
  /// change notifications.
  ///
  /// If a strings is provided the string is treated as a
  /// ID under which the notification is registered on the
  /// client side. The ID can be used to unregister for
  /// these events using the `client/unregisterCapability`
  /// request.
  final Either2<String, bool> changeNotifications;

  /// The server provides code actions. The
  /// `CodeActionOptions` return type is only valid if the
  /// client signals code action literal support via the
  /// property
  /// `textDocument.codeAction.codeActionLiteralSupport`.
  final Either2<bool, CodeActionOptions> codeActionProvider;

  /// The server provides code lens.
  final CodeLensOptions codeLensProvider;

  /// The server provides completion support.
  final CompletionOptions completionProvider;

  /// The server provides goto definition support.
  final bool definitionProvider;

  /// The server provides document formatting.
  final bool documentFormattingProvider;

  /// The server provides document highlight support.
  final bool documentHighlightProvider;

  /// The server provides document link support.
  final DocumentLinkOptions documentLinkProvider;

  /// The server provides document formatting on typing.
  final DocumentOnTypeFormattingOptions documentOnTypeFormattingProvider;

  /// The server provides document range formatting.
  final bool documentRangeFormattingProvider;

  /// The server provides document symbol support.
  final bool documentSymbolProvider;

  /// The server provides execute command support.
  final ExecuteCommandOptions executeCommandProvider;

  /// The server provides hover support.
  final bool hoverProvider;

  /// The server provides find references support.
  final bool referencesProvider;

  /// The server provides rename support. RenameOptions
  /// may only be specified if the client states that it
  /// supports `prepareSupport` in its initial
  /// `initialize` request.
  final Either2<bool, RenameOptions> renameProvider;

  /// The server provides signature help support.
  final SignatureHelpOptions signatureHelpProvider;

  /// The server has support for workspace folders
  final bool supported;

  /// Defines how text documents are synced. Is either a
  /// detailed structure defining each notification or for
  /// backwards compatibility the TextDocumentSyncKind
  /// number. If omitted it defaults to
  /// `TextDocumentSyncKind.None`.
  final Either2<TextDocumentSyncOptions, num> textDocumentSync;

  /// The server provides workspace symbol support.
  final bool workspaceSymbolProvider;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (textDocumentSync != null) {
      __result['textDocumentSync'] = textDocumentSync;
    }
    if (hoverProvider != null) {
      __result['hoverProvider'] = hoverProvider;
    }
    if (completionProvider != null) {
      __result['completionProvider'] = completionProvider;
    }
    if (signatureHelpProvider != null) {
      __result['signatureHelpProvider'] = signatureHelpProvider;
    }
    if (definitionProvider != null) {
      __result['definitionProvider'] = definitionProvider;
    }
    if (referencesProvider != null) {
      __result['referencesProvider'] = referencesProvider;
    }
    if (documentHighlightProvider != null) {
      __result['documentHighlightProvider'] = documentHighlightProvider;
    }
    if (documentSymbolProvider != null) {
      __result['documentSymbolProvider'] = documentSymbolProvider;
    }
    if (workspaceSymbolProvider != null) {
      __result['workspaceSymbolProvider'] = workspaceSymbolProvider;
    }
    if (codeActionProvider != null) {
      __result['codeActionProvider'] = codeActionProvider;
    }
    if (codeLensProvider != null) {
      __result['codeLensProvider'] = codeLensProvider;
    }
    if (documentFormattingProvider != null) {
      __result['documentFormattingProvider'] = documentFormattingProvider;
    }
    if (documentRangeFormattingProvider != null) {
      __result['documentRangeFormattingProvider'] =
          documentRangeFormattingProvider;
    }
    if (documentOnTypeFormattingProvider != null) {
      __result['documentOnTypeFormattingProvider'] =
          documentOnTypeFormattingProvider;
    }
    if (renameProvider != null) {
      __result['renameProvider'] = renameProvider;
    }
    if (documentLinkProvider != null) {
      __result['documentLinkProvider'] = documentLinkProvider;
    }
    if (executeCommandProvider != null) {
      __result['executeCommandProvider'] = executeCommandProvider;
    }
    if (supported != null) {
      __result['supported'] = supported;
    }
    if (changeNotifications != null) {
      __result['changeNotifications'] = changeNotifications;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class ShowMessageParams {
  ShowMessageParams(this.type, this.message) {
    if (type == null) {
      throw 'type is required but was not provided';
    }
    if (message == null) {
      throw 'message is required but was not provided';
    }
  }
  factory ShowMessageParams.fromJson(Map<String, dynamic> json) {
    final type = new MessageType.fromJson(json['type']);
    final message = json['message'];
    return new ShowMessageParams(type, message);
  }

  /// The actual message.
  final String message;

  /// The message type.
  final MessageType type;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['type'] = type ?? (throw 'type is required but was not set');
    __result['message'] =
        message ?? (throw 'message is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('type') &&
        MessageType.canParse(obj['type']) &&
        obj.containsKey('message') &&
        obj['message'] is String;
  }
}

class ShowMessageRequestParams {
  ShowMessageRequestParams(this.type, this.message, this.actions) {
    if (type == null) {
      throw 'type is required but was not provided';
    }
    if (message == null) {
      throw 'message is required but was not provided';
    }
  }
  factory ShowMessageRequestParams.fromJson(Map<String, dynamic> json) {
    final type = new MessageType.fromJson(json['type']);
    final message = json['message'];
    final actions = json['actions']
        ?.map((item) => new MessageActionItem.fromJson(item))
        ?.cast<MessageActionItem>()
        ?.toList();
    return new ShowMessageRequestParams(type, message, actions);
  }

  /// The message action items to present.
  final List<MessageActionItem> actions;

  /// The actual message
  final String message;

  /// The message type.
  final MessageType type;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['type'] = type ?? (throw 'type is required but was not set');
    __result['message'] =
        message ?? (throw 'message is required but was not set');
    if (actions != null) {
      __result['actions'] = actions;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('type') &&
        MessageType.canParse(obj['type']) &&
        obj.containsKey('message') &&
        obj['message'] is String;
  }
}

/// Signature help represents the signature of something
/// callable. There can be multiple signature but only one
/// active and only one active parameter.
class SignatureHelp {
  SignatureHelp(this.signatures, this.activeSignature, this.activeParameter) {
    if (signatures == null) {
      throw 'signatures is required but was not provided';
    }
  }
  factory SignatureHelp.fromJson(Map<String, dynamic> json) {
    final signatures = json['signatures']
        ?.map((item) => new SignatureInformation.fromJson(item))
        ?.cast<SignatureInformation>()
        ?.toList();
    final activeSignature = json['activeSignature'];
    final activeParameter = json['activeParameter'];
    return new SignatureHelp(signatures, activeSignature, activeParameter);
  }

  /// The active parameter of the active signature. If
  /// omitted or the value lies outside the range of
  /// `signatures[activeSignature].parameters` defaults to
  /// 0 if the active signature has parameters. If the
  /// active signature has no parameters it is ignored. In
  /// future version of the protocol this property might
  /// become mandatory to better express the active
  /// parameter if the active signature does have any.
  final num activeParameter;

  /// The active signature. If omitted or the value lies
  /// outside the range of `signatures` the value defaults
  /// to zero or is ignored if `signatures.length === 0`.
  /// Whenever possible implementors should make an active
  /// decision about the active signature and shouldn't
  /// rely on a default value. In future version of the
  /// protocol this property might become mandatory to
  /// better express this.
  final num activeSignature;

  /// One or more signatures.
  final List<SignatureInformation> signatures;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['signatures'] =
        signatures ?? (throw 'signatures is required but was not set');
    if (activeSignature != null) {
      __result['activeSignature'] = activeSignature;
    }
    if (activeParameter != null) {
      __result['activeParameter'] = activeParameter;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('signatures') &&
        (obj['signatures'] is List &&
            (obj['signatures'].length == 0 ||
                obj['signatures']
                    .every((item) => SignatureInformation.canParse(item))));
  }
}

/// Signature help options.
class SignatureHelpOptions {
  SignatureHelpOptions(this.triggerCharacters);
  factory SignatureHelpOptions.fromJson(Map<String, dynamic> json) {
    final triggerCharacters = json['triggerCharacters']
        ?.map((item) => item)
        ?.cast<String>()
        ?.toList();
    return new SignatureHelpOptions(triggerCharacters);
  }

  /// The characters that trigger signature help
  /// automatically.
  final List<String> triggerCharacters;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (triggerCharacters != null) {
      __result['triggerCharacters'] = triggerCharacters;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class SignatureHelpRegistrationOptions
    implements TextDocumentRegistrationOptions {
  SignatureHelpRegistrationOptions(
      this.triggerCharacters, this.documentSelector);
  factory SignatureHelpRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final triggerCharacters = json['triggerCharacters']
        ?.map((item) => item)
        ?.cast<String>()
        ?.toList();
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new SignatureHelpRegistrationOptions(
        triggerCharacters, documentSelector);
  }

  /// A document selector to identify the scope of the
  /// registration. If set to null the document selector
  /// provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  /// The characters that trigger signature help
  /// automatically.
  final List<String> triggerCharacters;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (triggerCharacters != null) {
      __result['triggerCharacters'] = triggerCharacters;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// Represents the signature of something callable. A
/// signature can have a label, like a function-name, a
/// doc-comment, and a set of parameters.
class SignatureInformation {
  SignatureInformation(this.label, this.documentation, this.parameters) {
    if (label == null) {
      throw 'label is required but was not provided';
    }
  }
  factory SignatureInformation.fromJson(Map<String, dynamic> json) {
    final label = json['label'];
    final documentation = json['documentation'] is String
        ? new Either2<String, MarkupContent>.t1(json['documentation'])
        : (MarkupContent.canParse(json['documentation'])
            ? new Either2<String, MarkupContent>.t2(
                new MarkupContent.fromJson(json['documentation']))
            : (throw '''${json['documentation']} was not one of (string, MarkupContent)'''));
    final parameters = json['parameters']
        ?.map((item) => new ParameterInformation.fromJson(item))
        ?.cast<ParameterInformation>()
        ?.toList();
    return new SignatureInformation(label, documentation, parameters);
  }

  /// The human-readable doc-comment of this signature.
  /// Will be shown in the UI but can be omitted.
  final Either2<String, MarkupContent> documentation;

  /// The label of this signature. Will be shown in the
  /// UI.
  final String label;

  /// The parameters of this signature.
  final List<ParameterInformation> parameters;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['label'] = label ?? (throw 'label is required but was not set');
    if (documentation != null) {
      __result['documentation'] = documentation;
    }
    if (parameters != null) {
      __result['parameters'] = parameters;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('label') &&
        obj['label'] is String;
  }
}

/// Static registration options to be returned in the
/// initialize request.
class StaticRegistrationOptions {
  StaticRegistrationOptions(this.id);
  factory StaticRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final id = json['id'];
    return new StaticRegistrationOptions(id);
  }

  /// The id used to register the request. The id can be
  /// used to deregister the request again. See also
  /// Registration#id.
  final String id;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (id != null) {
      __result['id'] = id;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// Represents information about programming constructs
/// like variables, classes, interfaces etc.
class SymbolInformation {
  SymbolInformation(this.name, this.kind, this.deprecated, this.location,
      this.containerName) {
    if (name == null) {
      throw 'name is required but was not provided';
    }
    if (kind == null) {
      throw 'kind is required but was not provided';
    }
    if (location == null) {
      throw 'location is required but was not provided';
    }
  }
  factory SymbolInformation.fromJson(Map<String, dynamic> json) {
    final name = json['name'];
    final kind = json['kind'];
    final deprecated = json['deprecated'];
    final location = new Location.fromJson(json['location']);
    final containerName = json['containerName'];
    return new SymbolInformation(
        name, kind, deprecated, location, containerName);
  }

  /// The name of the symbol containing this symbol. This
  /// information is for user interface purposes (e.g. to
  /// render a qualifier in the user interface if
  /// necessary). It can't be used to re-infer a hierarchy
  /// for the document symbols.
  final String containerName;

  /// Indicates if this symbol is deprecated.
  final bool deprecated;

  /// The kind of this symbol.
  final num kind;

  /// The location of this symbol. The location's range is
  /// used by a tool to reveal the location in the editor.
  /// If the symbol is selected in the tool the range's
  /// start information is used to position the cursor. So
  /// the range usually spans more then the actual
  /// symbol's name and does normally include things like
  /// visibility modifiers.
  ///
  /// The range doesn't have to denote a node range in the
  /// sense of a abstract syntax tree. It can therefore
  /// not be used to re-construct a hierarchy of the
  /// symbols.
  final Location location;

  /// The name of this symbol.
  final String name;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['name'] = name ?? (throw 'name is required but was not set');
    __result['kind'] = kind ?? (throw 'kind is required but was not set');
    if (deprecated != null) {
      __result['deprecated'] = deprecated;
    }
    __result['location'] =
        location ?? (throw 'location is required but was not set');
    if (containerName != null) {
      __result['containerName'] = containerName;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('name') &&
        obj['name'] is String &&
        obj.containsKey('kind') &&
        obj['kind'] is num &&
        obj.containsKey('location') &&
        Location.canParse(obj['location']);
  }
}

/// A symbol kind.
class SymbolKind {
  const SymbolKind._(this._value);
  const SymbolKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
      case 4:
      case 5:
      case 6:
      case 7:
      case 8:
      case 9:
      case 10:
      case 11:
      case 12:
      case 13:
      case 14:
      case 15:
      case 16:
      case 17:
      case 18:
      case 19:
      case 20:
      case 21:
      case 22:
      case 23:
      case 24:
      case 25:
      case 26:
        return true;
    }
    return false;
  }

  static const File = const SymbolKind._(1);
  static const Module = const SymbolKind._(2);
  static const Namespace = const SymbolKind._(3);
  static const Package = const SymbolKind._(4);
  static const Class = const SymbolKind._(5);
  static const Method = const SymbolKind._(6);
  static const Property = const SymbolKind._(7);
  static const Field = const SymbolKind._(8);
  static const Constructor = const SymbolKind._(9);
  static const Enum = const SymbolKind._(10);
  static const Interface = const SymbolKind._(11);
  static const Function = const SymbolKind._(12);
  static const Variable = const SymbolKind._(13);
  static const Constant = const SymbolKind._(14);
  static const Str = const SymbolKind._(15);
  static const Number = const SymbolKind._(16);
  static const Boolean = const SymbolKind._(17);
  static const Array = const SymbolKind._(18);
  static const Obj = const SymbolKind._(19);
  static const Key = const SymbolKind._(20);
  static const Null = const SymbolKind._(21);
  static const EnumMember = const SymbolKind._(22);
  static const Struct = const SymbolKind._(23);
  static const Event = const SymbolKind._(24);
  static const Operator = const SymbolKind._(25);
  static const TypeParameter = const SymbolKind._(26);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is SymbolKind && o._value == _value;
}

/// Describe options to be used when registering for
/// text document change events.
class TextDocumentChangeRegistrationOptions
    implements TextDocumentRegistrationOptions {
  TextDocumentChangeRegistrationOptions(this.syncKind, this.documentSelector) {
    if (syncKind == null) {
      throw 'syncKind is required but was not provided';
    }
  }
  factory TextDocumentChangeRegistrationOptions.fromJson(
      Map<String, dynamic> json) {
    final syncKind = json['syncKind'];
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new TextDocumentChangeRegistrationOptions(
        syncKind, documentSelector);
  }

  /// A document selector to identify the scope of the
  /// registration. If set to null the document selector
  /// provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  /// How documents are synced to the server. See
  /// TextDocumentSyncKind.Full and
  /// TextDocumentSyncKind.Incremental.
  final num syncKind;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['syncKind'] =
        syncKind ?? (throw 'syncKind is required but was not set');
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('syncKind') &&
        obj['syncKind'] is num &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// Text document specific client capabilities.
class TextDocumentClientCapabilities {
  TextDocumentClientCapabilities(this.dynamicRegistration, this.willSave,
      this.willSaveWaitUntil, this.didSave);
  factory TextDocumentClientCapabilities.fromJson(Map<String, dynamic> json) {
    final dynamicRegistration = json['dynamicRegistration'];
    final willSave = json['willSave'];
    final willSaveWaitUntil = json['willSaveWaitUntil'];
    final didSave = json['didSave'];
    return new TextDocumentClientCapabilities(
        dynamicRegistration, willSave, willSaveWaitUntil, didSave);
  }

  /// The client supports did save notifications.
  final bool didSave;

  /// Whether text document synchronization supports
  /// dynamic registration.
  final bool dynamicRegistration;

  /// The client supports sending will save
  /// notifications.
  final bool willSave;

  /// The client supports sending a will save request
  /// and waits for a response providing text edits
  /// which will be applied to the document before it is
  /// saved.
  final bool willSaveWaitUntil;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (dynamicRegistration != null) {
      __result['dynamicRegistration'] = dynamicRegistration;
    }
    if (willSave != null) {
      __result['willSave'] = willSave;
    }
    if (willSaveWaitUntil != null) {
      __result['willSaveWaitUntil'] = willSaveWaitUntil;
    }
    if (didSave != null) {
      __result['didSave'] = didSave;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

/// An event describing a change to a text document. If
/// range and rangeLength are omitted the new text is
/// considered to be the full content of the document.
class TextDocumentContentChangeEvent {
  TextDocumentContentChangeEvent(this.range, this.rangeLength, this.text) {
    if (text == null) {
      throw 'text is required but was not provided';
    }
  }
  factory TextDocumentContentChangeEvent.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final rangeLength = json['rangeLength'];
    final text = json['text'];
    return new TextDocumentContentChangeEvent(range, rangeLength, text);
  }

  /// The range of the document that changed.
  final Range range;

  /// The length of the range that got replaced.
  final num rangeLength;

  /// The new text of the range/document.
  final String text;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (range != null) {
      __result['range'] = range;
    }
    if (rangeLength != null) {
      __result['rangeLength'] = rangeLength;
    }
    __result['text'] = text ?? (throw 'text is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('text') &&
        obj['text'] is String;
  }
}

class TextDocumentEdit implements FileOperation {
  TextDocumentEdit(this.textDocument, this.edits) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (edits == null) {
      throw 'edits is required but was not provided';
    }
  }
  factory TextDocumentEdit.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new VersionedTextDocumentIdentifier.fromJson(json['textDocument']);
    final edits = json['edits']
        ?.map((item) => new TextEdit.fromJson(item))
        ?.cast<TextEdit>()
        ?.toList();
    return new TextDocumentEdit(textDocument, edits);
  }

  /// The edits to be applied.
  final List<TextEdit> edits;

  /// The text document to change.
  final VersionedTextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['edits'] = edits ?? (throw 'edits is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        VersionedTextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('edits') &&
        (obj['edits'] is List &&
            (obj['edits'].length == 0 ||
                obj['edits'].every((item) => TextEdit.canParse(item))));
  }
}

class TextDocumentIdentifier {
  TextDocumentIdentifier(this.uri) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
  }
  factory TextDocumentIdentifier.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    return new TextDocumentIdentifier(uri);
  }

  /// The text document's URI.
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String;
  }
}

class TextDocumentItem {
  TextDocumentItem(this.uri, this.languageId, this.version, this.text) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
    if (languageId == null) {
      throw 'languageId is required but was not provided';
    }
    if (version == null) {
      throw 'version is required but was not provided';
    }
    if (text == null) {
      throw 'text is required but was not provided';
    }
  }
  factory TextDocumentItem.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final languageId = json['languageId'];
    final version = json['version'];
    final text = json['text'];
    return new TextDocumentItem(uri, languageId, version, text);
  }

  /// The text document's language identifier.
  final String languageId;

  /// The content of the opened text document.
  final String text;

  /// The text document's URI.
  final String uri;

  /// The version number of this document (it will
  /// increase after each change, including undo/redo).
  final num version;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    __result['languageId'] =
        languageId ?? (throw 'languageId is required but was not set');
    __result['version'] =
        version ?? (throw 'version is required but was not set');
    __result['text'] = text ?? (throw 'text is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String &&
        obj.containsKey('languageId') &&
        obj['languageId'] is String &&
        obj.containsKey('version') &&
        obj['version'] is num &&
        obj.containsKey('text') &&
        obj['text'] is String;
  }
}

class TextDocumentPositionParams {
  TextDocumentPositionParams(this.textDocument, this.position) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (position == null) {
      throw 'position is required but was not provided';
    }
  }
  factory TextDocumentPositionParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final position = new Position.fromJson(json['position']);
    return new TextDocumentPositionParams(textDocument, position);
  }

  /// The position inside the text document.
  final Position position;

  /// The text document.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['position'] =
        position ?? (throw 'position is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('position') &&
        Position.canParse(obj['position']);
  }
}

class TextDocumentRegistrationOptions {
  TextDocumentRegistrationOptions(this.documentSelector);
  factory TextDocumentRegistrationOptions.fromJson(Map<String, dynamic> json) {
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new TextDocumentRegistrationOptions(documentSelector);
  }

  /// A document selector to identify the scope of the
  /// registration. If set to null the document selector
  /// provided on the client side will be used.
  final List<DocumentFilter> documentSelector;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// Represents reasons why a text document is saved.
class TextDocumentSaveReason {
  const TextDocumentSaveReason._(this._value);
  const TextDocumentSaveReason.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 3:
        return true;
    }
    return false;
  }

  /// Manually triggered, e.g. by the user pressing
  /// save, by starting debugging, or by an API call.
  static const Manual = const TextDocumentSaveReason._(1);

  /// Automatic after a delay.
  static const AfterDelay = const TextDocumentSaveReason._(2);

  /// When the editor lost focus.
  static const FocusOut = const TextDocumentSaveReason._(3);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is TextDocumentSaveReason && o._value == _value;
}

class TextDocumentSaveRegistrationOptions
    implements TextDocumentRegistrationOptions {
  TextDocumentSaveRegistrationOptions(this.includeText, this.documentSelector);
  factory TextDocumentSaveRegistrationOptions.fromJson(
      Map<String, dynamic> json) {
    final includeText = json['includeText'];
    final documentSelector = json['documentSelector']
        ?.map((item) => new DocumentFilter.fromJson(item))
        ?.cast<DocumentFilter>()
        ?.toList();
    return new TextDocumentSaveRegistrationOptions(
        includeText, documentSelector);
  }

  /// A document selector to identify the scope of the
  /// registration. If set to null the document
  /// selector provided on the client side will be
  /// used.
  final List<DocumentFilter> documentSelector;

  /// The client is supposed to include the content on
  /// save.
  final bool includeText;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (includeText != null) {
      __result['includeText'] = includeText;
    }
    __result['documentSelector'] = documentSelector;
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('documentSelector') &&
        (obj['documentSelector'] is List &&
            (obj['documentSelector'].length == 0 ||
                obj['documentSelector']
                    .every((item) => DocumentFilter.canParse(item))));
  }
}

/// Defines how the host (editor) should sync document
/// changes to the language server.
class TextDocumentSyncKind {
  const TextDocumentSyncKind._(this._value);
  const TextDocumentSyncKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 0:
      case 1:
      case 2:
        return true;
    }
    return false;
  }

  /// Documents should not be synced at all.
  static const None = const TextDocumentSyncKind._(0);

  /// Documents are synced by always sending the
  /// full content of the document.
  static const Full = const TextDocumentSyncKind._(1);

  /// Documents are synced by sending the full
  /// content on open. After that only incremental
  /// updates to the document are send.
  static const Incremental = const TextDocumentSyncKind._(2);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is TextDocumentSyncKind && o._value == _value;
}

class TextDocumentSyncOptions {
  TextDocumentSyncOptions(this.openClose, this.change, this.willSave,
      this.willSaveWaitUntil, this.save);
  factory TextDocumentSyncOptions.fromJson(Map<String, dynamic> json) {
    final openClose = json['openClose'];
    final change = new TextDocumentSyncKind.fromJson(json['change']);
    final willSave = json['willSave'];
    final willSaveWaitUntil = json['willSaveWaitUntil'];
    final save = new SaveOptions.fromJson(json['save']);
    return new TextDocumentSyncOptions(
        openClose, change, willSave, willSaveWaitUntil, save);
  }

  /// Change notifications are sent to the server.
  /// See TextDocumentSyncKind.None,
  /// TextDocumentSyncKind.Full and
  /// TextDocumentSyncKind.Incremental. If omitted
  /// it defaults to TextDocumentSyncKind.None.
  final TextDocumentSyncKind change;

  /// Open and close notifications are sent to the
  /// server.
  final bool openClose;

  /// Save notifications are sent to the server.
  final SaveOptions save;

  /// Will save notifications are sent to the
  /// server.
  final bool willSave;

  /// Will save wait until requests are sent to the
  /// server.
  final bool willSaveWaitUntil;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (openClose != null) {
      __result['openClose'] = openClose;
    }
    if (change != null) {
      __result['change'] = change;
    }
    if (willSave != null) {
      __result['willSave'] = willSave;
    }
    if (willSaveWaitUntil != null) {
      __result['willSaveWaitUntil'] = willSaveWaitUntil;
    }
    if (save != null) {
      __result['save'] = save;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class TextEdit {
  TextEdit(this.range, this.newText) {
    if (range == null) {
      throw 'range is required but was not provided';
    }
    if (newText == null) {
      throw 'newText is required but was not provided';
    }
  }
  factory TextEdit.fromJson(Map<String, dynamic> json) {
    final range = new Range.fromJson(json['range']);
    final newText = json['newText'];
    return new TextEdit(range, newText);
  }

  /// The string to be inserted. For delete
  /// operations use an empty string.
  final String newText;

  /// The range of the text document to be
  /// manipulated. To insert text into a document
  /// create a range where start === end.
  final Range range;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['range'] = range ?? (throw 'range is required but was not set');
    __result['newText'] =
        newText ?? (throw 'newText is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('range') &&
        Range.canParse(obj['range']) &&
        obj.containsKey('newText') &&
        obj['newText'] is String;
  }
}

/// General parameters to unregister a capability.
class Unregistration {
  Unregistration(this.id, this.method) {
    if (id == null) {
      throw 'id is required but was not provided';
    }
    if (method == null) {
      throw 'method is required but was not provided';
    }
  }
  factory Unregistration.fromJson(Map<String, dynamic> json) {
    final id = json['id'];
    final method = json['method'];
    return new Unregistration(id, method);
  }

  /// The id used to unregister the request or
  /// notification. Usually an id provided during
  /// the register request.
  final String id;

  /// The method / capability to unregister for.
  final String method;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['id'] = id ?? (throw 'id is required but was not set');
    __result['method'] = method ?? (throw 'method is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('id') &&
        obj['id'] is String &&
        obj.containsKey('method') &&
        obj['method'] is String;
  }
}

class UnregistrationParams {
  UnregistrationParams(this.unregisterations) {
    if (unregisterations == null) {
      throw 'unregisterations is required but was not provided';
    }
  }
  factory UnregistrationParams.fromJson(Map<String, dynamic> json) {
    final unregisterations = json['unregisterations']
        ?.map((item) => new Unregistration.fromJson(item))
        ?.cast<Unregistration>()
        ?.toList();
    return new UnregistrationParams(unregisterations);
  }

  final List<Unregistration> unregisterations;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['unregisterations'] = unregisterations ??
        (throw 'unregisterations is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('unregisterations') &&
        (obj['unregisterations'] is List &&
            (obj['unregisterations'].length == 0 ||
                obj['unregisterations']
                    .every((item) => Unregistration.canParse(item))));
  }
}

class VersionedTextDocumentIdentifier implements TextDocumentIdentifier {
  VersionedTextDocumentIdentifier(this.version, this.uri) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
  }
  factory VersionedTextDocumentIdentifier.fromJson(Map<String, dynamic> json) {
    final version = json['version'];
    final uri = json['uri'];
    return new VersionedTextDocumentIdentifier(version, uri);
  }

  /// The text document's URI.
  final String uri;

  /// The version number of this document. If a
  /// versioned text document identifier is sent
  /// from the server to the client and the file is
  /// not open in the editor (the server has not
  /// received an open notification before) the
  /// server can send `null` to indicate that the
  /// version is known and the content on disk is
  /// the truth (as speced with document content
  /// ownership).
  ///
  /// The version number of a document will increase
  /// after each change, including undo/redo. The
  /// number doesn't need to be consecutive.
  final num version;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['version'] = version;
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('version') &&
        obj['version'] is num &&
        obj.containsKey('uri') &&
        obj['uri'] is String;
  }
}

class WatchKind {
  const WatchKind._(this._value);
  const WatchKind.fromJson(this._value);

  final Object _value;

  static bool canParse(Object obj) {
    switch (obj) {
      case 1:
      case 2:
      case 4:
        return true;
    }
    return false;
  }

  /// Interested in create events.
  static const Create = const WatchKind._(1);

  /// Interested in change events
  static const Change = const WatchKind._(2);

  /// Interested in delete events
  static const Delete = const WatchKind._(4);

  Object toJson() => _value;

  @override
  String toString() => _value.toString();

  @override
  get hashCode => _value.hashCode;

  bool operator ==(o) => o is WatchKind && o._value == _value;
}

/// The parameters send in a will save text
/// document notification.
class WillSaveTextDocumentParams {
  WillSaveTextDocumentParams(this.textDocument, this.reason) {
    if (textDocument == null) {
      throw 'textDocument is required but was not provided';
    }
    if (reason == null) {
      throw 'reason is required but was not provided';
    }
  }
  factory WillSaveTextDocumentParams.fromJson(Map<String, dynamic> json) {
    final textDocument =
        new TextDocumentIdentifier.fromJson(json['textDocument']);
    final reason = json['reason'];
    return new WillSaveTextDocumentParams(textDocument, reason);
  }

  /// The 'TextDocumentSaveReason'.
  final num reason;

  /// The document that will be saved.
  final TextDocumentIdentifier textDocument;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['textDocument'] =
        textDocument ?? (throw 'textDocument is required but was not set');
    __result['reason'] = reason ?? (throw 'reason is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('textDocument') &&
        TextDocumentIdentifier.canParse(obj['textDocument']) &&
        obj.containsKey('reason') &&
        obj['reason'] is num;
  }
}

/// Workspace specific client capabilities.
class WorkspaceClientCapabilities {
  WorkspaceClientCapabilities(this.applyEdit, this.documentChanges,
      this.resourceOperations, this.failureHandling);
  factory WorkspaceClientCapabilities.fromJson(Map<String, dynamic> json) {
    final applyEdit = json['applyEdit'];
    final documentChanges = json['documentChanges'];
    final resourceOperations = json['resourceOperations']
        ?.map((item) => new ResourceOperationKind.fromJson(item))
        ?.cast<ResourceOperationKind>()
        ?.toList();
    final failureHandling =
        new FailureHandlingKind.fromJson(json['failureHandling']);
    return new WorkspaceClientCapabilities(
        applyEdit, documentChanges, resourceOperations, failureHandling);
  }

  /// The client supports applying batch edits to
  /// the workspace by supporting the request
  /// 'workspace/applyEdit'
  final bool applyEdit;

  /// The client supports versioned document
  /// changes in `WorkspaceEdit`s
  final bool documentChanges;

  /// The failure handling strategy of a client if
  /// applying the workspace edit failes.
  final FailureHandlingKind failureHandling;

  /// The resource operations the client supports.
  /// Clients should at least support 'create',
  /// 'rename' and 'delete' files and folders.
  final List<ResourceOperationKind> resourceOperations;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (applyEdit != null) {
      __result['applyEdit'] = applyEdit;
    }
    if (documentChanges != null) {
      __result['documentChanges'] = documentChanges;
    }
    if (resourceOperations != null) {
      __result['resourceOperations'] = resourceOperations;
    }
    if (failureHandling != null) {
      __result['failureHandling'] = failureHandling;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class WorkspaceEdit {
  WorkspaceEdit(this.changes, this.documentChanges);
  factory WorkspaceEdit.fromJson(Map<String, dynamic> json) {
    final changes = json['changes'];
    final documentChanges = json['documentChanges']
        ?.map((item) => item)
        ?.cast<FileOperation>()
        ?.toList();
    return new WorkspaceEdit(changes, documentChanges);
  }

  /// Holds changes to existing resources.
  final Map<String, List<TextEdit>> changes;

  /// Depending on the client capability
  /// `workspace.workspaceEdit.resourceOperations`
  /// document changes are either an array of
  /// `TextDocumentEdit`s to express changes to n
  /// different text documents where each text
  /// document edit addresses a specific version
  /// of a text document. Or it can contain above
  /// `TextDocumentEdit`s mixed with create,
  /// rename and delete file / folder operations.
  ///
  /// Whether a client supports versioned document
  /// edits is expressed via
  /// `workspace.workspaceEdit.documentChanges`
  /// client capability.
  ///
  /// If a client neither supports
  /// `documentChanges` nor
  /// `workspace.workspaceEdit.resourceOperations`
  /// then only plain `TextEdit`s using the
  /// `changes` property are supported.
  final List<FileOperation> documentChanges;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    if (changes != null) {
      __result['changes'] = changes;
    }
    if (documentChanges != null) {
      __result['documentChanges'] = documentChanges;
    }
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic>;
  }
}

class WorkspaceFolder {
  WorkspaceFolder(this.uri, this.name) {
    if (uri == null) {
      throw 'uri is required but was not provided';
    }
    if (name == null) {
      throw 'name is required but was not provided';
    }
  }
  factory WorkspaceFolder.fromJson(Map<String, dynamic> json) {
    final uri = json['uri'];
    final name = json['name'];
    return new WorkspaceFolder(uri, name);
  }

  /// The name of the workspace folder. Defaults
  /// to the uri's basename.
  final String name;

  /// The associated URI for this workspace
  /// folder.
  final String uri;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['uri'] = uri ?? (throw 'uri is required but was not set');
    __result['name'] = name ?? (throw 'name is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('uri') &&
        obj['uri'] is String &&
        obj.containsKey('name') &&
        obj['name'] is String;
  }
}

/// The workspace folder change event.
class WorkspaceFoldersChangeEvent {
  WorkspaceFoldersChangeEvent(this.added, this.removed) {
    if (added == null) {
      throw 'added is required but was not provided';
    }
    if (removed == null) {
      throw 'removed is required but was not provided';
    }
  }
  factory WorkspaceFoldersChangeEvent.fromJson(Map<String, dynamic> json) {
    final added = json['added']
        ?.map((item) => new WorkspaceFolder.fromJson(item))
        ?.cast<WorkspaceFolder>()
        ?.toList();
    final removed = json['removed']
        ?.map((item) => new WorkspaceFolder.fromJson(item))
        ?.cast<WorkspaceFolder>()
        ?.toList();
    return new WorkspaceFoldersChangeEvent(added, removed);
  }

  /// The array of added workspace folders
  final List<WorkspaceFolder> added;

  /// The array of the removed workspace folders
  final List<WorkspaceFolder> removed;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['added'] = added ?? (throw 'added is required but was not set');
    __result['removed'] =
        removed ?? (throw 'removed is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('added') &&
        (obj['added'] is List &&
            (obj['added'].length == 0 ||
                obj['added']
                    .every((item) => WorkspaceFolder.canParse(item)))) &&
        obj.containsKey('removed') &&
        (obj['removed'] is List &&
            (obj['removed'].length == 0 ||
                obj['removed']
                    .every((item) => WorkspaceFolder.canParse(item))));
  }
}

/// The parameters of a Workspace Symbol Request.
class WorkspaceSymbolParams {
  WorkspaceSymbolParams(this.query) {
    if (query == null) {
      throw 'query is required but was not provided';
    }
  }
  factory WorkspaceSymbolParams.fromJson(Map<String, dynamic> json) {
    final query = json['query'];
    return new WorkspaceSymbolParams(query);
  }

  /// A non-empty query string
  final String query;

  Map<String, dynamic> toJson() {
    Map<String, dynamic> __result = {};
    __result['query'] = query ?? (throw 'query is required but was not set');
    return __result;
  }

  static bool canParse(Object obj) {
    return obj is Map<String, dynamic> &&
        obj.containsKey('query') &&
        obj['query'] is String;
  }
}