public static function Get($producer) {
        if( !(self::$instance && ($producer & self::$instance->acceptedProducers)) ) {
            if(!isset(self::$dummy)) {
                self::$dummy = new SPLog(0, self::PRODUCER_NONE, self::TARGET_CONSOLE, false);
            }
            return self::$dummy;
        }
        return self::$instance;
    }