code: def DbUnExportDevice(self, argin):
          
          self._log.debug("In DbUnExportDevice()")
          dev_name = argin[0].lower()
          self.db.unexport_device(dev_name)
docs: Mark a device as non exported in database
  
          :param argin: Device name
          :type: tango.DevString
          :return:
          :rtype: tango.DevVoid