code: protected function parseAttributeName($data)
      {
          parse_str($data, $attrParts);
          $attrParts = is_null($attrParts) ? [] : $attrParts;
          $newAttr = array_keys(array_dot($attrParts));
  
          return array_pop($newAttr);
      }
docs: Parse Validation input request data.
  
  @param $data
  @return array