src/vs/platform/userDataSync/common/userDataSyncIpc.ts/UserDataSyncStoreManagementServiceChannelClient/getPreviousUserDataSyncStore
class UserDataSyncStoreManagementServiceChannelClient:	async getPreviousUserDataSyncStore(): Promise<IUserDataSyncStore> {
		const userDataSyncStore = await this.channel.call<IUserDataSyncStore>('getPreviousUserDataSyncStore');
		return this.revive(userDataSyncStore);
	}