GUI -- Further work on refactoring Topology View server side code.
- includes some cleanup of UiMessageHandler and subclasses thereof.

Change-Id: Ie48d830447a4abe1b3accda41a934530a4d55d0e
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/GroupViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/GroupViewMessageHandler.java
index 105a99f..d7e1047 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/GroupViewMessageHandler.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/GroupViewMessageHandler.java
@@ -56,7 +56,7 @@
     };
 
     @Override
-    protected Collection<RequestHandler> getHandlers() {
+    protected Collection<RequestHandler> createRequestHandlers() {
         return ImmutableSet.of(new GroupDataRequest());
     }