code: def _request(self, method, url, headers=None, params=None, **aio_kwargs):
          
          access_token = params.pop(self.access_token_key, None)
          if access_token:
              headers['Authorization'] = "Bearer %s" % access_token
          return super(DiscordClient, self)._request(
              method, url, headers=headers, params=params, **aio_kwargs)
docs: Setup Authorization Header..