handleOutput((RenderableOutputEvent) event);
        } else if (event instanceof ProgressCompleteEvent) {
            onComplete((ProgressCompleteEvent) event);
        } else if (event instanceof EndOutputEvent) {
            onEnd((EndOutputEvent) event);
        } else if (event instanceof UpdateNowEvent) {
            onUpdateNow((UpdateNowEvent) event);
        } else if (!(event instanceof ProgressEvent)) {
            listener.onOutput(event);