YANG Grouping Linker Support

Change-Id: I2fec0c0bb4d1584e82ffba3228106897ccad2bf5
diff --git a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/KeyListener.java b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/KeyListener.java
index 81223fd..9d215d2 100644
--- a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/KeyListener.java
+++ b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/KeyListener.java
@@ -45,8 +45,8 @@
  */
 
 /**
- * Represesnts listener based call back function corresponding to the "key"
- * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ * Represesnts listener based call back function corresponding to the "key" rule
+ * defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
  */
 public final class KeyListener {
 
@@ -57,15 +57,14 @@
     }
 
     /**
-     * It is called when parser receives an input matching the grammar
-     * rule (key), perform validations and updates the data model
-     * tree.
+     * It is called when parser receives an input matching the grammar rule
+     * (key), perform validations and updates the data model tree.
      *
      * @param listener listener's object
      * @param ctx context object of the grammar rule
      */
     public static void processKeyEntry(TreeWalkListener listener,
-                                         GeneratedYangParser.KeyStatementContext ctx) {
+            GeneratedYangParser.KeyStatementContext ctx) {
 
         // Check for stack to be non empty.
         checkStackIsNotEmpty(listener, MISSING_HOLDER, KEY_DATA, ctx.key().getText(), ENTRY);
@@ -94,7 +93,7 @@
             }
         } else {
             throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, KEY_DATA, ctx.key().getText(),
-                            ENTRY));
+                    ENTRY));
         }
     }
 }
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