fireAppearanceChanged() The only time #fireAppearanceChanged must be called is when a party
modifies an attribute of one of the Styles, because Styles don't notify
their layer when they change.
The only time #fireAppearanceChanged must be called is when a party
modifies an attribute of one of the Styles, because Styles don't notify
their layer when they change. But if a party adds or removes a feature,
or applies an EditTransaction to a feature, #fireAppearanceChanged will
be called automatically. This event will be ignored if
LayerManager#isFiringEvents is false