Validation of `@protected` method invocations.

pkg/analyzer/lib/src/generated/element_handle.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.generated.element_handle;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 340 matching lines @@
   @override
   bool get isDeprecated => actualElement.isDeprecated;
 
   @override
   bool get isOverride => actualElement.isOverride;
 
   @override
   bool get isPrivate => actualElement.isPrivate;
 
   @override
+  bool get isProtected => actualElement.isProtected;
+
+  @override
   bool get isPublic => actualElement.isPublic;
 
   @override
   bool get isSynthetic => actualElement.isSynthetic;
 
   @override
   LibraryElement get library =>
       getAncestor((element) => element is LibraryElement);
 
   @override
@@ skipping 722 matching lines @@
 }
 
 /**
  * TODO(scheglov) invalid implementation
  */
 class WeakReference<T> {
   final T value;
   WeakReference(this.value);
   T get() => value;
 }