src/vs/platform/audioCues/browser/audioCueService.ts/AudioCue/register
class AudioCue:	private static register(options: {
		name: string;
		sound: Sound;
		settingsKey: string;
	}): AudioCue {
		const audioCue = new AudioCue(options.sound, options.name, options.settingsKey);
		AudioCue._audioCues.add(audioCue);
		return audioCue;
	}