protected String handleShortChar(String propertyName, String value, Integer size) {
   ShortCharHandlingMode mode = getShortCharHandlingMode(propertyName, value, size);
   return ParameterUtil.handleShortChar(propertyName, value, size, mode);
 }
 protected String convertEmptyToNull(String value) {
   return ParameterUtil.convertEmptyToNull(value);
 }