private void addValidationObjectiveToMap(
     Map<String, Map<String, List<String>>> messageTypeValidationObjectiveReferenceFilesMap,
     TestDataTreeWrapper testDataTreeWrapper) {
   messageTypeValidationObjectiveReferenceFilesMap
       .get(testDataTreeWrapper.getMessageType())
       .put(testDataTreeWrapper.getValidationObjective(), new ArrayList<String>());
 }
 private boolean isValidationObjectiveInMap(
     Map<String, Map<String, List<String>>> messageTypeValidationObjectiveReferenceFilesMap,
     TestDataTreeWrapper testDataTreeWrapper) {
   return messageTypeValidationObjectiveReferenceFilesMap
       .get(testDataTreeWrapper.getMessageType())
       .containsKey(testDataTreeWrapper.getValidationObjective());
 }
 private void addReferenceFileNameToListInValidationObjectiveMap(
     Map<String, Map<String, List<String>>> messageTypeValidationObjectiveReferenceFilesMap,
     TestDataTreeWrapper testDataTreeWrapper) {
   messageTypeValidationObjectiveReferenceFilesMap
       .get(testDataTreeWrapper.getMessageType())
       .get(testDataTreeWrapper.getValidationObjective())
       .add(testDataTreeWrapper.getReferenceFileName());
 }