static public function _registered_shutdown()
	{
		if( self::$_byPassCallBacks )
		{
			return;
		}
		#- first sort the stack
		uasort( self::$_registeredCallbacks, array( __class__, '_compare' ) );
		foreach( self::$_registeredCallbacks as $cb )
		{
			call_user_func_array( $cb[ 0 ], $cb[ 3 ] );
		}
	}