code: def _process_project_transfer(self, action, transfer_id, status_comment):
          
          data = {}
          if status_comment:
              data["status_comment"] = status_comment
          path = "/project_transfers/{}/{}".format(transfer_id, action)
          return self._put(path, data, content_type=ContentType.form)
docs: Send PUT request to one of the project transfer action endpoints
          :param action: str name of the action (reject/accept/cancel)
          :param transfer_id: str uuid of the project_transfer
          :param status_comment: str comment about the action, optional
          :return: requests.Response containing the successful result