1. polymer
  2. polymer
  3. PolymerJob
  4. start

method start

void start(void callback(), [Duration wait])

Starts the job. If the job is already running, it will stop first.

Source 

void start(void callback(), [Duration wait]) {
  stop();
  _callback = callback;
  if (wait == null) {
    _id = window.requestAnimationFrame((_) => complete());
  } else {
    _timer = new Timer(wait, complete);
  }
}