/**
* @brief This class emits a signals when a long press gesture occurs that meets the requirements set by the application.
* @SINCE_1_0.0
- * @see LongPressGestureDetector::SetTouchesRequired.
*
* For any valid long press, two signals will be emitted:
* - First identifying the beginning (state = Started) i.e. when fingers held down for the required time.