Finish parameters matching.

pkg/analyzer/lib/src/generated/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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.element;
 
 import 'dart:collection';
@@ skipping 5450 matching lines @@
     for (int i = 0; i < parameterCount; i++) {
       if (i > 0) {
         buffer.write(", ");
       }
       (_parameters[i] as ParameterElementImpl).appendTo(buffer);
     }
     buffer.write(")");
     if (type != null) {
       buffer.write(Element.RIGHT_ARROW);
       buffer.write(type.returnType);
+    } else if (returnType != null) {
+      buffer.write(Element.RIGHT_ARROW);
+      buffer.write(returnType);
     }
   }
 
   @override
   ElementImpl getChild(String identifier) {
     for (VariableElement parameter in _parameters) {
       if ((parameter as VariableElementImpl).identifier == identifier) {
         return parameter as VariableElementImpl;
       }
     }
@@ skipping 7019 matching lines @@
     // bottom <: void (as bottom is a subtype of all types).
     // void <: dynamic (as dynamic is a supertype of all types)
     return identical(type, this) || type.isDynamic;
   }
 
   @override
   VoidTypeImpl substitute2(List<DartType> argumentTypes,
       List<DartType> parameterTypes) =>
       this;
 }