code: def Oem(self, command, timeout_ms=None, info_cb=DEFAULT_MESSAGE_CALLBACK):
          
          if not isinstance(command, bytes):
              command = command.encode('utf8')
          return self._SimpleCommand(
              b'oem %s' % command, timeout_ms=timeout_ms, info_cb=info_cb)
docs: Executes an OEM command on the device.
  
          Args:
            command: Command to execute, such as 'poweroff' or 'bootconfig read'.
            timeout_ms: Optional timeout in milliseconds to wait for a response.
            info_cb: See Download. Messages vary based on command.
  
          Returns:
            The final response from the device.