[ONOS-6677] Description in pattern statement

Change-Id: Iacdd3ac0cafe6b39eaa4ba463d5c25a72aa50549
diff --git a/compiler/base/parser/src/test/resources/LengthStatementInsideTypeDef.yang b/compiler/base/parser/src/test/resources/LengthStatementInsideTypeDef.yang
index c1195dc..ad59080 100644
--- a/compiler/base/parser/src/test/resources/LengthStatementInsideTypeDef.yang
+++ b/compiler/base/parser/src/test/resources/LengthStatementInsideTypeDef.yang
@@ -4,12 +4,18 @@
     prefix Ant;
     typedef invalid-interval {
         type string {
-            length "1..100";
+            length "1..100" {
+                description "length-description typedef";
+                reference "reference typedef";
+            }
          }
     }
     leaf xyz {
        type invalid-interval {
-           length "2..100";
+           length "2..100"{
+                description "length-description type";
+                reference "reference type";
+            }
        }
     }
 }