companion object {
        fun getNestedType(type: KotlinType): NestedType {
            val possiblyInnerType = type.buildPossiblyInnerType() ?: throw IllegalArgumentException(type.toString())
            val innerTypesAsList = possiblyInnerType.segments()
            val indexOfParameterizedType = innerTypesAsList.indexOfFirst { innerPart -> innerPart.arguments.isNotEmpty() }

internal class KtFe10KlibSourceFileNameProvider(
    override val analysisSession: KtAnalysisSession,
) : KtKlibSourceFileNameProvider() {
    override fun getKlibSourceFileName(declaration: KtDeclarationSymbol): String? {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

internal class KtFe10DataFlowInfoProvider(override val analysisSession: KtAnalysisSession) : KtDataFlowInfoProvider() {
    override fun getExitPointSnapshot(statements: List<KtExpression>): KtDataFlowExitPointSnapshot {
        throw NotImplementedError("Method is not implemented for FE 1.0")
    }

        configuration: CompilerConfiguration,
        target: KtCompilerTarget,
        allowedErrorFilter: (KtDiagnostic) -> Boolean
    ): KtCompilationResult {
        if (file is KtCodeFragment) {
            throw UnsupportedOperationException("Code fragments are not supported in K1 implementation")
        }

        val classBuilderFactory = when (target) {
            is KtCompilerTarget.Jvm -> target.classBuilderFactory
        }

        </option>
        <option name="METHOD_OPTIONS">
          <value>
            <option name="ACCESS_JAVADOC_REQUIRED_FOR" value="none" />
            <option name="REQUIRED_TAGS" value="@return@param@throws or @exception" />
          </value>
        </option>
        <option name="FIELD_OPTIONS">
          <value>
            <option name="ACCESS_JAVADOC_REQUIRED_FOR" value="none" />

        }

    override fun createPointer(): KtSymbolPointer<KtDestructuringDeclarationSymbol> {
        KtPsiBasedSymbolPointer.createForSymbolFromSource<KtDestructuringDeclarationSymbol>(this)?.let { return it }
        throw CanNotCreateSymbolPointerForLocalLibraryDeclarationException(SpecialNames.DESTRUCT.asString())
    }

    override fun equals(other: Any?): Boolean {
        if (this === other) return true

    }

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

    override fun unwrapFakeOverrides(symbol: KtCallableSymbol): KtCallableSymbol {

            // when is an `else`.
            is KtWhenExpression ->
                parent.subjectExpression == child && parent.entries.firstOrNull()?.isElse == false

            // Throw expressions use the expression thrown.
            is KtThrowExpression ->
                parent.thrownExpression == child

            // Body and catch blocks of try-catch expressions are used if the try-catch itself

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

    @Suppress("OVERRIDE_DEPRECATION")
    override fun checkExtensionFitsCandidate(
        firSymbolForCandidate: KtCallableSymbol,

      <option name="METHOD_PARAMETERS_RPAREN_ON_NEXT_LINE" value="true" />
      <option name="EXTENDS_LIST_WRAP" value="1" />
      <option name="THROWS_LIST_WRAP" value="5" />
      <option name="EXTENDS_KEYWORD_WRAP" value="1" />
      <option name="THROWS_KEYWORD_WRAP" value="1" />
      <option name="METHOD_CALL_CHAIN_WRAP" value="1" />
      <option name="BINARY_OPERATION_WRAP" value="5" />