Completion should not show overridden inherited methods

pkg/analysis_server/lib/src/services/completion/keyword_computer.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 services.completion.computer.dart.keyword;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
@@ skipping 201 matching lines @@
       _addSuggestion(Keyword.WITH, DART_RELEVANCE_HIGH);
     }
     if (node.implementsClause == null) {
       _addSuggestion(Keyword.IMPLEMENTS, DART_RELEVANCE_HIGH);
     }
   }
 
   void _addSuggestion(Keyword keyword,
       [int relevance = DART_RELEVANCE_DEFAULT]) {
     String completion = keyword.syntax;
-    request.suggestions.add(new CompletionSuggestion(
+    request.addSuggestion(new CompletionSuggestion(
         CompletionSuggestionKind.KEYWORD,
         relevance, completion, completion.length, 0, false, false));
   }
 
   void _addSuggestions(List<Keyword> keywords,
       [int relevance = DART_RELEVANCE_KEYWORD]) {
     keywords.forEach((Keyword keyword) {
       _addSuggestion(keyword, relevance);
     });
   }
@@ skipping 17 matching lines @@
         return false;
       }
       AstNode parent = body.parent;
       if (parent is ConstructorDeclaration || parent is MethodDeclaration) {
         return true;
       }
       node = parent;
     }
   }
 }