src/vs/platform/userDataSync/common/userDataSyncMachines.ts/UserDataSyncMachinesService/writeMachinesData
class UserDataSyncMachinesService:	private async writeMachinesData(machinesData: IMachinesData): Promise<void> {
		const content = JSON.stringify(machinesData);
		const ref = await this.userDataSyncStoreService.writeResource(UserDataSyncMachinesService.RESOURCE, content, this.userData?.ref || null);
		this.userData = { ref, content };
		this._onDidChange.fire();
	}