@classmethod
  def TestStartFrontend(cls):
    PromptForTestStart('Connect Android device and press ENTER.',
                       text_input=False)()
    return cls.TestStart()
Start when frontend event comes, but get serial from USB.
dataset/ETHPy150Open google/openhtf/openhtf/plugs/usb/__init__.py/AndroidTriggers.TestStartFrontend