[ONOS-4583] Union defect fix.

Change-Id: Ic31866b9a1b7bd5d8209d5d22f4292ab9c79a118
diff --git a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaSubModule.java b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaSubModule.java
index 4de196c..73d7583 100644
--- a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaSubModule.java
+++ b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/javamodel/YangJavaSubModule.java
@@ -194,7 +194,6 @@
         }
     }
 
-
     /**
      * Returns notifications node list.
      *
@@ -219,7 +218,7 @@
      * @param rootNode root node of the data model
      * @return status of rpc's existence
      */
-    public boolean isNotificationChildNodePresent(YangNode rootNode) {
+    private boolean isNotificationChildNodePresent(YangNode rootNode) {
         YangNode childNode = rootNode.getChild();
 
         while (childNode != null) {
@@ -229,9 +228,6 @@
             childNode = childNode.getNextSibling();
         }
 
-        if (!getNotificationNodes().isEmpty()) {
-            return true;
-        }
-        return false;
+        return !getNotificationNodes().isEmpty();
     }
 }