func (g *Glg) CustomLogf(level string, format string, val ...interface{}) error {
	return g.out(g.TagStringToLevel(level), format, val...)
}
func (g *Glg) CustomLogf(level string, format string, val ...interface{}) error {
	return g.out(g.TagStringToLevel(level), format, val...)
}
func ( g * Glg ) CustomLogf ( level string , format string , val ... interface { } ) error { return g . out ( g . TagStringToLevel ( level ) , format , val ... ) }
// CustomLogf outputs formatted custom level log
CustomLogf outputs formatted custom level log