Add "deletejob" to OnAllTasksComplete event

I often encounter the scenario that by the time a job completes I already gathered all job output and don't need to inspect the Batch job anymore. Still, I need to have some code somewhere that then finally deletes the job so that I don't accumulate jobs possibly hitting some quota at some point. For simple workflows it would be great if this step could be removed by adding a "deletejob" option to the OnAllTasksComplete event.