def _utilityCallback(self, res, err, conn, cmd, arg):
cmdResult = '<STR_LIT>'<EOL>if err == FAIL_REASON.SUCCESS:<EOL><INDENT>cmdResult = '<STR_LIT>'<EOL><DEDENT>conn.send(cmdResult + '<STR_LIT:U+0020>' + cmd + '<STR_LIT:U+0020>' + arg)<EOL>
Callback for the utility messages

:param res: result of the command
:param err: error code (one of pysyncobj.config.FAIL_REASON)
:param conn: utility connection
:param cmd: command
:param arg: command arguments