code: async def commands(self):
          
          _print_commands('Remote control', interface.RemoteControl)
          _print_commands('Metadata', interface.Metadata)
          _print_commands('Playing', interface.Playing)
          _print_commands('AirPlay', interface.AirPlay)
          _print_commands('Device', DeviceCommands)
          _print_commands('Global', self.__class__)
  
          return 0
docs: Print a list with available commands.