diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
index e615d13..7027dc0 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
@@ -1163,6 +1163,26 @@
     }
 
     @Override
+    public void enterIdentifier(GeneratedYangParser.IdentifierContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitIdentifier(GeneratedYangParser.IdentifierContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void enterDateArgumentString(GeneratedYangParser.DateArgumentStringContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
+    public void exitDateArgumentString(GeneratedYangParser.DateArgumentStringContext ctx) {
+        // TODO: implement the method.
+    }
+
+    @Override
     public void visitTerminal(TerminalNode terminalNode) {
         // TODO: implement the method.
     }