Q:
What happens when you use OTScheduleDeferredTask to schedule a task that 
is running? 
A: 
The "Open Transport Client Note" mentions that OTScheduleDeferredTask returns 
false when 
you attempt to schedule a task that is already scheduled, but it doesn't say anything 
about what happens if the task is running.  It turns out that a task that is running is 
not consider to be scheduled, so OTScheduleDeferredTask will 
successfully reschedule it. 
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