ioSchedulerPushJob

void ioSchedulerPushJob(gio.types.IOSchedulerJobFunc jobFunc,  int  ioPriority,  gio.cancellable.Cancellable cancellable =  null)

Schedules the I/O job to run in another thread.

notify will be called on user_data after job_func has returned, regardless whether the job was cancelled or has run to completion.

If cancellable is not null, it can be used to cancel the I/O job by calling gio.cancellable.Cancellable.cancel or by calling gio.global.ioSchedulerCancelAllJobs.

`jobFunc`	a #GIOSchedulerJobFunc.
`ioPriority`	the I/O priority of the request.
`cancellable`	optional #GCancellable object, null to ignore.