}

    /**
     * 初期化します。
     */
    protected static synchronized void initialize() {
        if (!initialized) {
            DisposableUtil.add(() -> {
                ResourceBundle.clearCache();
                initialized = false;
            });
            initialized = true;
        }
    }

    // with its `LLFirSession`.
    private val cache: ConcurrentMap<KtModule, KtAnalysisSession> = ContainerUtil.createConcurrentSoftValueMap()

    init {
        LowMemoryWatcher.register(::clearCaches, project)
    }

    override fun getAnalysisSession(useSiteKtElement: KtElement): KtAnalysisSession {
        val module = ProjectStructureProvider.getModule(project, useSiteKtElement, contextualModule = null)

        val context = facade.getAnalysisContext(useSiteKtModule, token)
        return KtFe10AnalysisSession(context, useSiteKtModule, token)
    }

    override fun clearCaches() {}