YANG Grouping Linker Support

Change-Id: I2fec0c0bb4d1584e82ffba3228106897ccad2bf5
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangRpc.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangRpc.java
index 15a6626..ce8b632 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangRpc.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangRpc.java
@@ -104,9 +104,9 @@
 
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as rpc \""
-                    + this.getName() + "\"");
+                    + getName() + "\"");
         }
     }