code: async def _send(self, http_verb, api_url, req_args):
          
          res = await self._request(
              http_verb=http_verb, api_url=api_url, req_args=req_args
          )
          data = {
              "client": self,
              "http_verb": http_verb,
              "api_url": api_url,
              "req_args": req_args,
          }
          return SlackResponse(**{**data, **res}).validate()
docs: Sends the request out for transmission.
  
          Args:
              http_verb (str): The HTTP verb. e.g. 'GET' or 'POST'.
              api_url (str): The Slack API url. e.g. 'https://slack.com/api/chat.postMessage'
              req_args (dict): The request arguments to be attached to the request.
              e.g.
              {
                  json: {
                      'attachments': [{"pretext": "pre-hello", "text": "text-world"}],
                      'channel': '#random'
                  }
              }
          Returns:
              The response parsed into a SlackResponse object.