[ONOS-4303, ONOS-4508, ONOS-4509, ONOS-4510, ONOS-4351]notification,rpc,union,sub-module,augment

Change-Id: Ibeed9ff965c13fd66743c1080cb1350d93a3a435
diff --git a/utils/yangutils/src/test/java/org/onosproject/yangutils/translator/tojava/utils/RpcTranslatorTest.java b/utils/yangutils/src/test/java/org/onosproject/yangutils/translator/tojava/utils/RpcTranslatorTest.java
index 138142e..9b8077c 100644
--- a/utils/yangutils/src/test/java/org/onosproject/yangutils/translator/tojava/utils/RpcTranslatorTest.java
+++ b/utils/yangutils/src/test/java/org/onosproject/yangutils/translator/tojava/utils/RpcTranslatorTest.java
@@ -24,7 +24,7 @@
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
 
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.clean;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
 
 /**
  * Unit tests for rpc translator.
@@ -48,7 +48,7 @@
 
         generateJavaCode(node, yangPluginConfig);
 
-        clean(userDir + "/target/RpcTestGenFile/");
+        deleteDirectory(userDir + "/target/RpcTestGenFile/");
     }
     // TODO enhance the test cases, after having a framework of translator test.
 }