src/vs/platform/backup/electron-main/backupMainService.ts/BackupMainService/getFolderBackupPaths
class BackupMainService:	getFolderBackupPaths(): URI[] {
		if (this.isHotExitOnExitAndWindowClose()) {
			// Only non-folder windows are restored on main process launch when
			// hot exit is configured as onExitAndWindowClose.
			return [];
		}

		return this.folders.slice(0); // return a copy
	}