src/vs/platform/backup/electron-main/backupMainService.ts/BackupMainService/save
class BackupMainService:	private async save(): Promise<void> {
		try {
			await Promises.writeFile(this.workspacesJsonPath, JSON.stringify(this.serializeBackups()));
		} catch (error) {
			this.logService.error(`Backup: Could not save workspaces.json: ${error.toString()}`);
		}
	}