yang choice case translator + whitebox fix

Change-Id: I96f1855bc71a002335946150b51e911ae6ac2fb2
diff --git a/src/test/java/org/onosproject/yangutils/parser/impl/CustomExceptionMatcher.java b/src/test/java/org/onosproject/yangutils/parser/impl/CustomExceptionMatcher.java
index e8cfa92..44d0c67 100644
--- a/src/test/java/org/onosproject/yangutils/parser/impl/CustomExceptionMatcher.java
+++ b/src/test/java/org/onosproject/yangutils/parser/impl/CustomExceptionMatcher.java
@@ -27,22 +27,22 @@
  */
 public final class CustomExceptionMatcher extends TypeSafeMatcher<ParserException> {
 
+    private int actualLine;
+    private final int expectedLine;
+    private int actualCharPosition;
+    private final int expectedCharPosition;
+
     /**
      * Customized exception matcher to match error location.
      *
      * @param line error line
      * @param charPosition error character position
-     * @return
+     * @return customized exception matcher to match error location
      */
     public static CustomExceptionMatcher errorLocation(int line, int charPosition) {
         return new CustomExceptionMatcher(line, charPosition);
     }
 
-    private int actualLine;
-    private final int expectedLine;
-    private int actualCharPosition;
-    private final int expectedCharPosition;
-
     private CustomExceptionMatcher(int expectedLine, int expectedCharPosition) {
         this.expectedLine = expectedLine;
         this.expectedCharPosition = expectedCharPosition;