Hi,
GWT automatically sinks the required event type when the first handlers is 
added of certain event type (done in Widget class).

Whay about automatically unsinking when a handler is remove and you notice 
that no handlers of that event type is present anymore?
Is this worth doing?

Note in my case setup it's easy to wrap the HandlerRegistration and detect 
if any handler is still present on a removeHandler action, but is this 
worth doing?
So is the cost of wrapping and detecting worth it?

- Ed

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