@FunctionalInterface public interface InvalidationListener
InvalidationListeneris notified whenever an
Observablebecomes invalid. It can be registered and unregistered with
For an in-depth explanation of invalidation events and how they differ from
change events, see the documentation of
The same instance of
InvalidationListener can be registered to listen
void invalidated(Observable observable)
InvalidationListener. It is called if an
In general is is considered bad practice to modify the observed value in this method.
Observablethat became invalid
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