private val analysisSessionProvider: KtFirAnalysisSessionProvider
            get() = getInstance(project) as? KtFirAnalysisSessionProvider
                ?: error("Expected the analysis session provider to be a `${KtFirAnalysisSessionProvider::class.simpleName}`.")

        override fun afterInvalidation(modules: Set<KtModule>) {

    ): List<KtDiagnostic> {
        return buildList {
            for (diagnostic in diagnostics) {
                require(diagnostic is KtPsiDiagnostic)

                if (diagnostic.severity == Severity.ERROR) {
                    val ktDiagnostic = diagnostic.asKtDiagnostic()
                    if (!allowedErrorFilter(ktDiagnostic)) {
                        add(ktDiagnostic)
                    }
                }