logger = logger.WithGroup("group0").With("reqId", "xxxx-xxx-xxxx-xxxx")
	logger.WithGroup("group1").Debug("Debug msg", "foo", "bar", "x", "y")
	logger.Info("This is a info msg", "foo", 1, "bar", true)
	logger.Warn("This is a warn msg", "foo", map[string]string{"aa": "bb", "cc": "dd"}, "bar", []string{"a", "b", "c"}, "null response", nil)
	logger.Error("This is a error msg", tint.Err(errors.New("i'm an error")))