docs: def get_raw_data(self, mac, response_format='json'):
          """Get data from API as string.
  
              Keyword arguments:
              mac -- MAC address or OUI for searching
              response_format -- supported types you can see on the https://macaddress.io
          """
  
          data = {
              self._FORMAT_F: response_format,
              self._SEARCH_F: mac
          }
  
          response = self.__decode_str(self.__call_api(self.__url, data), 'utf-8')
  
          if len(response) > 0:
              return response
          raise EmptyResponseException()