library /*isLegacy*/;
//
// Problems in library:
//
// pkg/front_end/testcases/general/flutter_issue64155.dart:5:1: Error: Library doesn't support null safety.
// // @dart=2.9
// ^^^^^^^^^^^^
//
import self as self;
import "dart:core" as core;
import "dart:async" as asy;

abstract class TestMixin<R extends core::Object* = dynamic, T extends core::Object* = dynamic> extends core::Object /*isMixinDeclaration*/  {
  method test(covariant-by-class asy::Future<self::TestMixin::R*>* fetch) → asy::Future<self::TestMixin::T*>* async /* emittedValueType= self::TestMixin::T* */ {
    final self::TestMixin::R* response = await fetch;
    self::TestMixin::T* result;
    if(response is{ForLegacy} self::Response<dynamic>*) {
      result = response{self::TestMixin::R* & self::Response<dynamic>* /* '*' & '*' = '*' */}.{self::Response::data}{dynamic} as{TypeError,ForDynamic,ForLegacy} self::TestMixin::T*;
    }
    else
      if(response is{ForLegacy} self::PagingResponse<dynamic>*) {
        result = response{self::TestMixin::R* & self::PagingResponse<dynamic>* /* '*' & '*' = '*' */}.{self::PagingResponse::data}{self::PagingResponseData<dynamic>*}.{self::PagingResponseData::data}{core::List<dynamic>*} as{ForLegacy} self::TestMixin::T*;
      }
      else
        if(response is{ForLegacy} self::TestMixin::T*) {
          result = response{self::TestMixin::R* & self::TestMixin::T* /* '*' & '*' = '*' */};
        }
        else {
          throw core::Exception::•("Invalid response type");
        }
    return result;
  }
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class PagingResponse<T extends core::Object* = dynamic> extends core::Object {
  final field self::PagingResponseData<self::PagingResponse::T*>* data;
  constructor •(self::PagingResponseData<self::PagingResponse::T*>* data) → self::PagingResponse<self::PagingResponse::T*>*
    : self::PagingResponse::data = data, super core::Object::•()
    ;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class PagingResponseData<T extends core::Object* = dynamic> extends core::Object {
  final field core::List<self::PagingResponseData::T*>* data;
  constructor •(core::List<self::PagingResponseData::T*>* data) → self::PagingResponseData<self::PagingResponseData::T*>*
    : self::PagingResponseData::data = data, super core::Object::•()
    ;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class Response<T extends core::Object* = dynamic> extends core::Object {
  final field self::Response::T* data;
  constructor •(self::Response::T* data) → self::Response<self::Response::T*>*
    : self::Response::data = data, super core::Object::•()
    ;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
abstract class _Class1&Object&TestMixin extends core::Object implements self::TestMixin<self::Response<core::String*>*, core::String*> /*isAnonymousMixin,isEliminatedMixin,hasConstConstructor*/  {
  const synthetic constructor •() → self::_Class1&Object&TestMixin*
    : super core::Object::•()
    ;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  method test(covariant-by-class asy::Future<self::Response<core::String*>*>* fetch) → asy::Future<core::String*>* async /* emittedValueType= core::String* */ {
    final self::Response<core::String*>* response = await fetch;
    core::String* result;
    if(response is{ForLegacy} self::Response<dynamic>*) {
      result = response{self::Response<core::String*>*}.{self::Response::data}{dynamic} as{TypeError,ForDynamic,ForLegacy} core::String*;
    }
    else
      if(response is{ForLegacy} self::PagingResponse<dynamic>*) {
        result = response{self::Response<core::String*>*}.{self::PagingResponse::data}{self::PagingResponseData<dynamic>*}.{self::PagingResponseData::data}{core::List<dynamic>*} as{ForLegacy} core::String*;
      }
      else
        if(response is{ForLegacy} core::String*) {
          result = response{self::Response<core::String*>*};
        }
        else {
          throw core::Exception::•("Invalid response type");
        }
    return result;
  }
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class Class1 extends self::_Class1&Object&TestMixin {
  synthetic constructor •() → self::Class1*
    : super self::_Class1&Object&TestMixin::•()
    ;
  method _test() → dynamic {
    final self::Response<core::String*>* response = new self::Response::•<core::String*>("test");
    this.{self::_Class1&Object&TestMixin::test}(asy::Future::value<self::Response<core::String*>*>(response)){(asy::Future<self::Response<core::String*>*>*) →* asy::Future<core::String*>*};
  }
}
abstract class _Class2&Object&TestMixin extends core::Object implements self::TestMixin<self::PagingResponse<core::String*>*, core::String*> /*isAnonymousMixin,isEliminatedMixin,hasConstConstructor*/  {
  const synthetic constructor •() → self::_Class2&Object&TestMixin*
    : super core::Object::•()
    ;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  method test(covariant-by-class asy::Future<self::PagingResponse<core::String*>*>* fetch) → asy::Future<core::String*>* async /* emittedValueType= core::String* */ {
    final self::PagingResponse<core::String*>* response = await fetch;
    core::String* result;
    if(response is{ForLegacy} self::Response<dynamic>*) {
      result = response{self::PagingResponse<core::String*>*}.{self::Response::data}{dynamic} as{TypeError,ForDynamic,ForLegacy} core::String*;
    }
    else
      if(response is{ForLegacy} self::PagingResponse<dynamic>*) {
        result = response{self::PagingResponse<core::String*>*}.{self::PagingResponse::data}{self::PagingResponseData<dynamic>*}.{self::PagingResponseData::data}{core::List<dynamic>*} as{ForLegacy} core::String*;
      }
      else
        if(response is{ForLegacy} core::String*) {
          result = response{self::PagingResponse<core::String*>*};
        }
        else {
          throw core::Exception::•("Invalid response type");
        }
    return result;
  }
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class Class2 extends self::_Class2&Object&TestMixin {
  synthetic constructor •() → self::Class2*
    : super self::_Class2&Object&TestMixin::•()
    ;
  method _test() → dynamic {
    final self::PagingResponse<core::String*>* response = new self::PagingResponse::•<core::String*>(new self::PagingResponseData::•<core::String*>(core::_GrowableList::_literal1<core::String*>("test")));
    this.{self::_Class2&Object&TestMixin::test}(asy::Future::value<self::PagingResponse<core::String*>*>(response)){(asy::Future<self::PagingResponse<core::String*>*>*) →* asy::Future<core::String*>*};
  }
}
static method main() → dynamic {}