code: private void storeOriginal(Pair<String, Object> keyValue) {
  		String key = SharedPreferenceUtils.keyTestMode + keyValue.first;
  
  		if (!preferenceUtils.isValueExistForKey(key)) {
  			preferenceUtils.put(key, keyValue.second);
  
  		}
  	}
docs: Store original value before it's changed in test mode. It will take care not to over write if original value is already stored.
  
  @param keyValue
  : Pair of key and original value.