func MultiLogger(backends ...Backend) LeveledBackend {
	var leveledBackends []LeveledBackend
	for _, backend := range backends {
		leveledBackends = append(leveledBackends, AddModuleLevel(backend))
	}
	return &multiLogger{leveledBackends}
}
func MultiLogger(backends ...Backend) LeveledBackend {
	var leveledBackends []LeveledBackend
	for _, backend := range backends {
		leveledBackends = append(leveledBackends, AddModuleLevel(backend))
	}
	return &multiLogger{leveledBackends}
}
func MultiLogger ( backends ... Backend ) LeveledBackend { var leveledBackends [ ] LeveledBackend for _ , backend := range backends { leveledBackends = append ( leveledBackends , AddModuleLevel ( backend ) ) } return & multiLogger { leveledBackends } }
// MultiLogger creates a logger which contain multiple loggers.
MultiLogger creates a logger which contain multiple loggers .