[ONOS-4753] Identity/identityref implementation and UT

Change-Id: I40148fa228465555be3bdf410cc294ffc0f34c18
diff --git a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/GeneratedJavaFileType.java b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/GeneratedJavaFileType.java
index d4666c0c..1a2b9b8 100644
--- a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/GeneratedJavaFileType.java
+++ b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/translator/tojava/GeneratedJavaFileType.java
@@ -89,6 +89,11 @@
     public static final int GENERATE_EVENT_SUBJECT_CLASS = 1024;
 
     /**
+     * Identity listener class.
+     */
+    public static final int GENERATE_IDENTITY_CLASS = 2048;
+
+    /**
      * Creates an instance of generate java file type.
      */
     private GeneratedJavaFileType() {