src/vs/platform/userDataSync/common/abstractSynchronizer.ts/AbstractSynchroniser/getRemoteUserData
class AbstractSynchroniser:	async getRemoteUserData(lastSyncData: IRemoteUserData | null): Promise<IRemoteUserData> {
		const { ref, content } = await this.getUserData(lastSyncData);
		let syncData: ISyncData | null = null;
		if (content !== null) {
			syncData = this.parseSyncData(content);
		}
		return { ref, syncData };
	}