code: async def get_json(self, url, json_callback=None, **kwargs):
          
          if not json_callback:
              json_callback = json.loads
          response = await self.request(method='get', url=url, **kwargs)
          return json_callback(response)
docs: Get a URL and return its JSON response.
  
          Args:
              url (str): URL to be requested.
              json_callback (func): Custom JSON loader function. Defaults
                  to :meth:`json.loads`.
              kwargs (dict): Additional arguments to pass through to the
                  request.
          Returns:
              response body returned by :func:`json_callback` function.