suggest only superclass elements for "super."

pkg/analysis_server/test/services/completion/completion_test_util.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 test.services.completion.util;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/protocol.dart' as protocol
@@ skipping 616 matching lines @@
     if (contributor is PrefixedElementContributor) {
       return assertSuggestGetter(name, returnType,
           relevance: relevance, isDeprecated: isDeprecated);
     } else {
       return assertNotSuggested(name);
     }
   }
 
   CompletionSuggestion assertSuggestInvocationMethod(
       String name, String declaringType, String returnType,
-      [int relevance = DART_RELEVANCE_DEFAULT]) {
+      {int relevance: DART_RELEVANCE_DEFAULT}) {
     if (contributor is PrefixedElementContributor) {
       return assertSuggestMethod(name, declaringType, returnType,
           relevance: relevance);
     } else {
       return assertNotSuggested(name);
     }
   }
 
   CompletionSuggestion assertSuggestInvocationSetter(String name,
       [int relevance = DART_RELEVANCE_DEFAULT]) {
@@ skipping 3698 matching lines @@
       assertNotSuggested('bar2');
       assertNotSuggested('_B');
       assertSuggestLocalClass('Y');
       assertSuggestLocalClass('C');
       assertSuggestLocalVariable('f', null);
       assertNotSuggested('x');
       assertNotSuggested('e');
     });
   }
 }