code: func (dc *DisruptionController) finders() []podControllerFinder {
  	return []podControllerFinder{dc.getPodReplicationController, dc.getPodDeployment, dc.getPodReplicaSet,
  		dc.getPodStatefulSet}
  }
docs: // TODO(mml): When controllerRef is implemented (#2210), we *could* simply
  // return controllers without their scales, and access scale type-generically
  // via the scale subresource.  That may not be as much of a win as it sounds,
  // however.  We are accessing everything through the pkg/client/cache API that
  // we have to set up and tune to the types we know we'll be accessing anyway,
  // and we may well need further tweaks just to be able to access scale
  // subresources.