src/vs/editor/browser/services/editorWorkerService.ts/EditorWorkerClient/_withSyncedResources
class EditorWorkerClient:	protected async _withSyncedResources(resources: URI[], forceLargeModels: boolean = false): Promise<EditorSimpleWorker> {
		if (this._disposed) {
			return Promise.reject(canceled());
		}
		return this._getProxy().then((proxy) => {
			this._getOrCreateModelManager(proxy).ensureSyncedResources(resources, forceLargeModels);
			return proxy;
		});
	}