internal class KaFe10DataFlowInfoProvider(override val analysisSession: KaSession) : KaDataFlowInfoProvider() {
    override fun getExitPointSnapshot(statements: List<KtExpression>): KaDataFlowExitPointSnapshot {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

        originalFile: KtFile,
        nameExpression: KtSimpleNameExpression,
        explicitReceiver: KtExpression?
    ): KaCompletionExtensionCandidateChecker {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

    @Suppress("OVERRIDE_DEPRECATION")
    override fun checkExtensionFitsCandidate(
        firSymbolForCandidate: KaCallableSymbol,
        originalFile: KtFile,

    }

    override fun getImplementationStatus(
        memberSymbol: KaCallableSymbol,
        parentClassSymbol: KaClassOrObjectSymbol
    ): ImplementationStatus?  {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

    override fun unwrapFakeOverrides(symbol: KaCallableSymbol): KaCallableSymbol {

internal class KaFe10KlibSourceFileNameProvider(
    override val analysisSession: KaSession,
) : KaKlibSourceFileNameProvider() {
    override fun getKlibSourceFileName(declaration: KaDeclarationSymbol): String? {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

        return subClassDescriptor.getSuperClassOrAny() == superClassDescriptor
    }

    override fun getIntersectionOverriddenSymbols(symbol: KaCallableSymbol): Collection<KaCallableSymbol> {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

- [`KT-65551`](https://youtrack.jetbrains.com/issue/KT-65551) K2: Property redeclaration on native compilation leads to NotImplementedError
- [`KT-65770`](https://youtrack.jetbrains.com/issue/KT-65770) K2: Diagnostic rendering of `vararg Foo` parameter produces `vararg Array<Foo>`