1. protected
void finished()

Clears out the overlay entries.

This method is intended to be used by subclasses who don't call super.didPop() because they want to have control over the timing of the overlay removal.

Do not call this method outside of this context.

Source 

@protected
void finished() {
  for (OverlayEntry entry in _overlayEntries)
    entry.remove();
  _overlayEntries.clear();
}