YANG range restriction listener

Change-Id: I51af1d5d85068bb35c88ed1f86778b6ffc407036
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 75f5396..e46bfc7 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
@@ -58,6 +58,7 @@
 import org.onosproject.yangutils.parser.impl.listeners.PositionListener;
 import org.onosproject.yangutils.parser.impl.listeners.PrefixListener;
 import org.onosproject.yangutils.parser.impl.listeners.PresenceListener;
+import org.onosproject.yangutils.parser.impl.listeners.RangeRestrictionListener;
 import org.onosproject.yangutils.parser.impl.listeners.ReferenceListener;
 import org.onosproject.yangutils.parser.impl.listeners.RevisionDateListener;
 import org.onosproject.yangutils.parser.impl.listeners.RevisionListener;
@@ -555,7 +556,7 @@
 
     @Override
     public void enterRangeStatement(GeneratedYangParser.RangeStatementContext ctx) {
-        // TODO: implement the method.
+        RangeRestrictionListener.processRangeRestrictionEntry(this, ctx);
     }
 
     @Override