func (g *Glg) SetPrefix(pref string) *Glg {
	v, ok := g.logger.Load(PRINT)
	if ok {
		value := v.(*logger)
		value.tag = pref
		g.logger.Store(PRINT, value)
	}
	return g
}
func (g *Glg) SetPrefix(pref string) *Glg {
	v, ok := g.logger.Load(PRINT)
	if ok {
		value := v.(*logger)
		value.tag = pref
		g.logger.Store(PRINT, value)
	}
	return g
}
func ( g * Glg ) SetPrefix ( pref string ) * Glg { v , ok := g . logger . Load ( PRINT ) if ok { value := v . ( * logger ) value . tag = pref g . logger . Store ( PRINT , value ) } return g }
// SetPrefix set Print logger prefix
SetPrefix set Print logger prefix