question: private void sendStageProgressPatch ( TaskState state ) { ServiceUtils . logInfo ( this , "Sending self-patch to stage %s" , state . stage , state . subStage ) ; TaskUtils . sendSelfPatch ( this , buildPatch ( state . stage , state . subStage , null ) ) ; }
target:  This method sends a patch operation to the current service instance to move to a new state.