text: const STATE_POSSIBLE = 1;
  const STATE_BEGAN = 2;
  const STATE_CHANGED = 4;
  const STATE_ENDED = 8;
  const STATE_RECOGNIZED = STATE_ENDED;
  const STATE_CANCELLED = 16;
  const STATE_FAILED = 32;
  
  export {
    STATE_POSSIBLE,
    STATE_BEGAN,
    STATE_CHANGED,
    STATE_ENDED,
    STATE_RECOGNIZED,
    STATE_CANCELLED,
    STATE_FAILED
  }
  