Expose function contained in GenericTypeAliasImpl.

pkg/analyzer/lib/src/dart/element/element.dart

 // Copyright (c) 2014, 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.
 
 library analyzer.src.dart.element.element;
 
 import 'dart:collection';
 import 'dart:math' show min;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 5011 matching lines @@
 }
 
 /**
  * A function type alias of the form
  *     `typedef` identifier typeParameters = genericFunctionType;
  *
  * Clients may not extend, implement or mix-in this class.
  */
 class GenericTypeAliasElementImpl extends ElementImpl
     with TypeParameterizedElementMixin
-    implements FunctionTypeAliasElement {
+    implements GenericTypeAliasElement {
   /**
    * The unlinked representation of the type in the summary.
    */
   final UnlinkedTypedef _unlinkedTypedef;
 
   /**
    * The element representing the generic function type.
    */
   GenericFunctionTypeElement _function;
 
@@ skipping 47 matching lines @@
   CompilationUnitElement get enclosingElement =>
       super.enclosingElement as CompilationUnitElement;
 
   @override
   TypeParameterizedElementMixin get enclosingTypeParameterContext => null;
 
   @override
   CompilationUnitElementImpl get enclosingUnit =>
       _enclosingElement as CompilationUnitElementImpl;
 
-  /**
-   * Return the generic function type element representing the generic function
-   * type on the right side of the equals.
-   */
+  @override
   GenericFunctionTypeElement get function {
     if (_function == null && _unlinkedTypedef != null) {
       DartType type = enclosingUnit.resynthesizerContext.resolveTypeRef(
           _unlinkedTypedef.returnType, this,
           declaredType: true);
       if (type is FunctionType) {
         Element element = type.element;
         if (element is GenericFunctionTypeElement) {
           (element as GenericFunctionTypeElementImpl).enclosingElement = this;
           _function = element;
@@ skipping 3980 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }