Job functions are called with no args, or a single options object
containing a cancelPromise. If the underlying async operation doesn't
support cancellation, the cancelPromise argument can be ignored. If the job
is cancellable, (such as a fetch which has support for AbortSignal) the
underlying operation should be aborted when the cancelPromise resolves. In
normal operation, the cancelPromise will remain permanently unsettled.
Job functions are called with no args, or a single options object containing a
cancelPromise. If the underlying async operation doesn't support cancellation, the cancelPromise argument can be ignored. If the job is cancellable, (such as a fetch which has support for AbortSignal) the underlying operation should be aborted when the cancelPromise resolves. In normal operation, the cancelPromise will remain permanently unsettled.