start method

dynamic start()

Implementation

start() {
  if (_state != _CircleState.Create && _state != _CircleState.End) {
    return;
  }
  _state = _CircleState.Start;
  _timeSinceUpdate = DateTime.now().millisecondsSinceEpoch;
  _duration = Duration();

  // QTTrackLogger.i("QTPageTimer", "create");
}