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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def on(self):
 """Send ON command to device."""

        on_command = StandardSend(self._address,
                                  COMMAND_LIGHT_ON_0X11_NONE, 0xff)
        self._send_method(on_command,
                          self._on_message_received)