code: def make_form_data_parser(self):
          
          return self.form_data_parser_class(self._get_file_stream,
                                             self.charset,
                                             self.encoding_errors,
                                             self.max_form_memory_size,
                                             self.max_content_length,
                                             self.parameter_storage_class)
docs: Creates the form data parser.  Instanciates the
          :attr:`form_data_parser_class` with some parameters.
  
          .. versionadded:: 0.8