Disable this repeater, so schedule(w) can't
be called, and wakers already scheduled with this repeater won't be
rescheduled again after E(waker).wake() is next called on them.
Returns the time scheduled for
the first call to E(waker).wake(). The waker will continue to be scheduled
every interval until the repeater is disabled.
Provides the ability to schedule wake() calls repeatedly at a regular interval, or to disable all future use of this TimerRepeater. Created by the deprecated makeRepeater(), new code should use repeatAfter(), which doesn't have a control object and doesn't require a second schedule step