code: def parse(self, response):
          
          if not self.helper.parse_crawler.content_type(response):
              return
  
          yield self.helper.parse_crawler.pass_to_pipeline(
              response,
              self.helper.url_extractor.get_allowed_domain(response.url)
          )
docs: Passes the response to the pipeline.
  
          :param obj response: The scrapy response