public virtual void unmap ()
Unsets the MAPPED flag on the actor and possibly unmaps its children if they were mapped.
Calling this function is not encouraged: the default Actor implementation of unmap will also unmap any eventual children by default when their parent is unmapped.
When overriding unmap, it is mandatory to chain up to the parent implementation.
It is important to note that the implementation of the unmap virtual function may be called after the
destroy or the
dispose implementation, but it is guaranteed to be called before the