[ONOS-3898/4069] Yang Utils Extension to support RPC/Notification/Choice/Case/Union

Change-Id: I405852caff3464719e8e586fa8e9ae9b6ed043ff
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java
index f3798f8..4716065 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java
@@ -75,6 +75,26 @@
     CONTAINER_NODE,
 
     /**
+     * Node contains "YANG's notification" information.
+     */
+    NOTIFICATION_NODE,
+
+    /**
+     * Node contains "YANG's input" information.
+     */
+    INPUT_NODE,
+
+    /**
+     * Node contains "YANG's output" information.
+     */
+    OUTPUT_NODE,
+
+    /**
+     * Node contains "YANG's rpc" information.
+     */
+    RPC_NODE,
+
+    /**
      * Node contains "YANG's list" information.
      */
     LIST_NODE