removed code duplication in translator, and addressed review comments

Change-Id: I27767a81c4bf279c80d2b98192f75f8f507b4457
diff --git a/src/test/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtilTest.java b/src/test/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtilTest.java
index 531e739..cf1cf8d 100644
--- a/src/test/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtilTest.java
+++ b/src/test/java/org/onosproject/yangutils/utils/io/impl/FileSystemUtilTest.java
@@ -75,7 +75,7 @@
     @Test
     public void createSourceFilesTest() throws IOException {
 
-        FileSystemUtil.createSourceFiles(baseDirPkg + "srcFile1", packageInfoContent, GeneratedFileType.INTERFACE);
+        FileSystemUtil.createSourceFiles(baseDirPkg + "srcFile1", packageInfoContent, GeneratedFileType.INTERFACE_MASK);
     }
 
     /**