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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:
 async def start_all_linking(self, linkcode, group, address=None):
 """Start the All-Linking process with the IM and device."""

        _LOGGING.info('Starting the All-Linking process')
        if address:
            linkdevice = self.plm.devices[Address(address).id]
            if not linkdevice:
                linkdevice = create(self.plm, address, None, None)
            _LOGGING.info('Attempting to link the PLM to device %s. ',
                          address)
            self.plm.start_all_linking(linkcode, group)
            asyncio.sleep(.5, loop=self.loop)
            linkdevice.enter_linking_mode(group=group)
        else:
            _LOGGING.info('Starting All-Linking on PLM. '
                          'Waiting for button press')
            self.plm.start_all_linking(linkcode, group)
            await asyncio.sleep(self.wait_time, loop=self.loop)

        _LOGGING.info('%d devices added to the All-Link Database',
                      len(self.plm.devices))
        await asyncio.sleep(.1, loop=self.loop)