LanguageFeatures/Extension-methods/syntax_name_t03.dart

/*
 * Copyright (c) 2019, 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.
 */
/**
 * @assertion an extension declaration is a top-level declaration with a grammar
 * similar to:
 * <extension> ::=
 *   `extension' <identifier>? <typeParameters>? `on' <type> `?'? `{'
 *     memberDeclaration*
 *   `}'
 * Such a declaration introduces its name (the identifier) into the surrounding
 * scope. The name does not denote a type, but it can be used to denote the
 * extension itself in various places. The name can be hidden or shown in import
 * or export declarations.
 *
 * @description Check that the name  can be hidden or shown in import or export
 * declarations.
 * @compile-error
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=extension-methods

import "my_fancy_list_lib.dart" hide MyFancyList;

main() {
    List<String> list = ["Lily", "was", "here"];
    list.doubleLength;
}