[ONOS-3878] Addressed Unwanted Warning in Listener's Framework

Change-Id: I41cc51a4cbbd4732f631c5e82808f1f3131757e3
diff --git a/src/main/java/org/onosproject/yangutils/parser/YangUtilsParser.java b/src/main/java/org/onosproject/yangutils/parser/YangUtilsParser.java
index 19d9f3b..36e9c1d 100644
--- a/src/main/java/org/onosproject/yangutils/parser/YangUtilsParser.java
+++ b/src/main/java/org/onosproject/yangutils/parser/YangUtilsParser.java
@@ -29,9 +29,10 @@
     /**
      * It is an entry function to initiate the YANG file parsing.
      *
-     * @param file input YANG file
-     * @return YangNode root node of the data model tree
-     * @throws ParserException when fails to get the data model
+     * @param file input YANG file.
+     * @return YangNode root node of the data model tree.
+     * @throws ParserException when fails to get the data model.
+     * @throws IOException when there is an exception in IO operation.
      */
     YangNode getDataModel(String file) throws IOException, ParserException;
 }