YANG construct collision detection framework added

Change-Id: I1458f9e3192641f3f90c444798c31a64536ffa5d
diff --git a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PresenceListener.java b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PresenceListener.java
index a771307..74e40b1 100644
--- a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PresenceListener.java
+++ b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PresenceListener.java
@@ -22,8 +22,8 @@
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
-import static org.onosproject.yangutils.parser.ParsableDataType.PRESENCE_DATA;
-import static org.onosproject.yangutils.parser.ParsableDataType.CONTAINER_DATA;
+import static org.onosproject.yangutils.utils.YangConstructType.PRESENCE_DATA;
+import static org.onosproject.yangutils.utils.YangConstructType.CONTAINER_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.INVALID_HOLDER;
@@ -57,8 +57,8 @@
      * rule (presence), performs validation and updates the data model
      * tree.
      *
-     * @param listener listener's object.
-     * @param ctx context object of the grammar rule.
+     * @param listener listener's object
+     * @param ctx context object of the grammar rule
      */
     public static void processPresenceEntry(TreeWalkListener listener,
                                              GeneratedYangParser.PresenceStatementContext ctx) {
@@ -67,7 +67,7 @@
         checkStackIsNotEmpty(listener, MISSING_HOLDER, PRESENCE_DATA, ctx.string().getText(), ENTRY);
 
         Parsable tmpData = listener.getParsedDataStack().peek();
-        if (tmpData.getParsableDataType() == CONTAINER_DATA) {
+        if (tmpData.getYangConstructType() == CONTAINER_DATA) {
             YangContainer container = (YangContainer) tmpData;
             container.setPresence(ctx.string().getText());
         } else {