By default, returns false. If overridden, return true if the action succeeded.
If the system-wide "Voice Over" Accessibility setting is on, a two-finger double-tap ("Magic Tap") should perform the most-important behavior of the application (e.g., starting or pausing media playback, answering or hanging up a phone call). Application developers can override this method to provide this functionality.
Application developers should not rely on application users knowing and using the "magic tap" gesture. Applications should always provide a visual UI that provides the same action as the "magic tap."