func (b *Base) Errorf(msg string, a ...interface{}) error {
	return b.Log(LevelError, nil, msg, a...)
}
func (b *Base) Errorf(msg string, a ...interface{}) error {
	return b.Log(LevelError, nil, msg, a...)
}
func ( b * Base ) Errorf ( msg string , a ... interface { } ) error { return b . Log ( LevelError , nil , msg , a ... ) }
/*
Errorf uses msg as a format string with subsequent parameters as values and logs
the resulting message to all added loggers at LogLevel.LevelError
*/
/ * Errorf uses msg as a format string with subsequent parameters as values and logs the resulting message to all added loggers at LogLevel . LevelError