If the expiry is present in the list of expired registrations being
currently iterated over by checkTimeouts, then it will be removed
(its timeout method will not be called). (This means that drop can
be called from timeout callbacks, unlike unregister.)
Does NOT unregister expiry, this.unregister has to be called
for that additionally.
If the expiry is present in the list of expired registrations being currently iterated over by checkTimeouts, then it will be removed (its timeout method will not be called). (This means that drop can be called from timeout callbacks, unlike unregister.)
Does NOT unregister expiry, this.unregister has to be called for that additionally.