src/vs/editor/browser/services/editorWorkerService.ts/EditorModelManager/constructor
class EditorModelManager:	constructor(proxy: EditorSimpleWorker, modelService: IModelService, keepIdleModels: boolean) {
		super();
		this._proxy = proxy;
		this._modelService = modelService;

		if (!keepIdleModels) {
			const timer = new IntervalTimer();
			timer.cancelAndSet(() => this._checkStopModelSync(), Math.round(STOP_SYNC_MODEL_DELTA_TIME_MS / 2));
			this._register(timer);
		}
	}