g.Log().Debug("this is debug level info !")
mlog.Log().Debugf("debug level: %d %d %s", 10, 20, "world")

mlog.Log().Info("this is debug info info !")
mlog.Log().Infof("info level: %d %d %s", 10, 20, "world")

mlog.Log().Warning("this is warn info !")
mlog.Log().Warningf("warn level: %d %d %s", 10, 20, "world")

mlog.Log().Error("this is error info !")
mlog.Log().Errorf("error level: %d %d %s", 10, 20, "world")