code: def get_request_payment(self, bucket):
          
          details = self._details(
              method=b"GET",
              url_context=self._url_context(bucket=bucket, object_name="?requestPayment"),
          )
          d = self._submit(self._query_factory(details))
          d.addCallback(self._parse_get_request_payment)
          return d
docs: Get the request payment configuration on a bucket.
  
          @param bucket: The name of the bucket.
          @return: A C{Deferred} that will fire with the name of the payer.