src/vs/workbench/api/browser/mainThreadTimeline.ts/MainThreadTimeline/$emitTimelineChangeEvent
class MainThreadTimeline:	$emitTimelineChangeEvent(e: TimelineChangeEvent): void {
		this.logService.trace(`MainThreadTimeline#emitChangeEvent: id=${e.id}, uri=${e.uri?.toString(true)}`);

		const emitter = this._providerEmitters.get(e.id!);
		emitter?.fire(e);
	}