src/vs/workbench/contrib/editSessions/browser/editSessionsStorageService.ts/EditSessionsWorkbenchService/existingSessionId
class EditSessionsWorkbenchService:	private set existingSessionId(sessionId: string | undefined) {
		this.logService.trace(`Saving authentication session preference for ID ${sessionId}.`);
		if (sessionId === undefined) {
			this.storageService.remove(EditSessionsWorkbenchService.CACHED_SESSION_STORAGE_KEY, StorageScope.APPLICATION);
		} else {
			this.storageService.store(EditSessionsWorkbenchService.CACHED_SESSION_STORAGE_KEY, sessionId, StorageScope.APPLICATION, StorageTarget.MACHINE);
		}
	}