glg.go
func (g *Glg) SetLevelMode(level LEVEL, mode MODE) *Glg {
	lev, ok := g.logger.Load(level)
	if ok {
		l := lev.(*logger)
		l.mode = mode
		l.updateMode()
		g.logger.Store(level, l)
	}

	return g
}
func (g *Glg) SetLevelMode(level LEVEL, mode MODE) *Glg {
	lev, ok := g.logger.Load(level)
	if ok {
		l := lev.(*logger)
		l.mode = mode
		l.updateMode()
		g.logger.Store(level, l)
	}

	return g
}
// SetLevelMode set glg logging mode* per level