update suggestion element return type to have type param

pkg/analysis_server/lib/src/services/completion/prefixed_element_contributor.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.contributor.dart.invocation;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analysis_server/src/services/completion/local_declaration_visitor.dart';
-import 'package:analysis_server/src/services/completion/local_suggestion_builder.dart';
+import 'package:analysis_server/src/services/completion/local_suggestion_builder.dart'
+    hide createSuggestion;
 import 'package:analysis_server/src/services/completion/optype.dart';
 import 'package:analysis_server/src/services/completion/suggestion_builder.dart';
+import 'package:analysis_server/src/services/completion/suggestion_builder.dart'
+    show createSuggestion;
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 
 import '../../protocol_server.dart'
     show CompletionSuggestion, CompletionSuggestionKind;
 import '../../protocol_server.dart' as protocol;
 
 /**
  * A contributor for calculating invocation / access suggestions
  * `completion.getSuggestions` request results.
@@ skipping 374 matching lines @@
       if (directive is ImportDirective) {
         if (directive.prefix != null) {
           if (directive.prefix.name == element.name) {
             // Suggest elements from the imported library
             LibraryElement library = directive.uriElement;
             LibraryElementSuggestionBuilder.suggestionsFor(request,
                 CompletionSuggestionKind.INVOCATION, library,
                 request.target.containingNode.parent is TypeName);
             modified = true;
             if (directive.deferredKeyword != null) {
-              String completion = 'loadLibrary';
-              CompletionSuggestion suggestion = new CompletionSuggestion(
-                  CompletionSuggestionKind.INVOCATION, DART_RELEVANCE_DEFAULT,
-                  completion, completion.length, 0, false, false,
-                  parameterNames: [],
-                  parameterTypes: [],
-                  requiredParameterCount: 0,
-                  hasNamedParameters: false,
-                  returnType: 'void');
-              suggestion.element = new protocol.Element(
-                  protocol.ElementKind.FUNCTION, completion,
-                  protocol.Element.makeFlags(),
-                  parameters: '()', returnType: 'void');
-              request.addSuggestion(suggestion);
+              FunctionElement loadLibFunct = library.loadLibraryFunction;
+              request.addSuggestion(createSuggestion(loadLibFunct));
             }
           }
         }
       }
     }
     return new Future.value(modified);
   }
 
   @override
   Future<bool> visitPropertyAccessorElement(PropertyAccessorElement element) {
     if (element != null) {
       PropertyInducingElement elemVar = element.variable;
       if (elemVar != null) {
         InterfaceTypeSuggestionBuilder.suggestionsFor(request, elemVar.type);
       }
       return new Future.value(true);
     }
     return new Future.value(false);
   }
 
   @override
   Future<bool> visitVariableElement(VariableElement element) {
     InterfaceTypeSuggestionBuilder.suggestionsFor(request, element.type);
     return new Future.value(true);
   }
 }