YANG: Restriction resolution implementation

Change-Id: I69503e8229def07b289a0c8c762bfe0ae5530232
diff --git a/utils/yangutils/src/test/resources/SelfResolutionWhenUsesAndGroupingAtRootLevelGroupingWithChild.yang b/utils/yangutils/src/test/resources/SelfResolutionWhenUsesAndGroupingAtRootLevelGroupingWithChild.yang
index f4f12b0..13cc4a5 100644
--- a/utils/yangutils/src/test/resources/SelfResolutionWhenUsesAndGroupingAtRootLevelGroupingWithChild.yang
+++ b/utils/yangutils/src/test/resources/SelfResolutionWhenUsesAndGroupingAtRootLevelGroupingWithChild.yang
@@ -4,12 +4,12 @@
     prefix Ant;
     uses treat;
     grouping treat {
-	leaf treat{
-            type String;
+        leaf treat{
+            type string;
         }
         container test{
             leaf leaf2{
-                type String;
+                type string;
             }
         }
     }