docs: static void flushStackLocalLeaks(Looper looper) {
      Handler handler = new Handler(looper) {
        @Override public void handleMessage(Message msg) {
          sendMessageDelayed(obtainMessage(), THREAD_LEAK_CLEANING_MS);
        }
      };
      handler.sendMessageDelayed(handler.obtainMessage(), THREAD_LEAK_CLEANING_MS);
    }