code: def get_definition_revision(self, project, definition_id, revision, **kwargs):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if definition_id is not None:
              route_values['definitionId'] = self._serialize.url('definition_id', definition_id, 'int')
          if revision is not None:
              route_values['revision'] = self._serialize.url('revision', revision, 'int')
          response = self._send(http_method='GET',
                                location_id='258b82e0-9d41-43f3-86d6-fef14ddd44bc',
                                version='5.1-preview.1',
                                route_values=route_values,
                                accept_media_type='text/plain')
          if "callback" in kwargs:
              callback = kwargs["callback"]
          else:
              callback = None
          return self._client.stream_download(response, callback=callback)
docs: GetDefinitionRevision.
          [Preview API] Get release definition for a given definitionId and revision
          :param str project: Project ID or project name
          :param int definition_id: Id of the definition.
          :param int revision: Id of the revision.
          :rtype: object