rejectGesture method

Implementation

@override
void rejectGesture(int pointer) {
  _TapTracker tracker = _trackers[pointer];
  // If tracker isn't in the list, check if this is the first tap tracker
  if (tracker == null &&
      _firstTap != null &&
      _firstTap.pointer == pointer)
    tracker = _firstTap;
  // If tracker is still null, we rejected ourselves already
  if (tracker != null)
    _reject(tracker);
}