val descriptor: VariableDescriptor? by cached {
        val bindingContext = analysisContext.analyze(accessorPsi, AnalysisMode.PARTIAL)
        bindingContext[BindingContext.PROPERTY_ACCESSOR, accessorPsi]?.valueParameters?.single()
    }

    override val origin: KtSymbolOrigin
        get() = withValidityAssertion { KtSymbolOrigin.SOURCE_MEMBER_GENERATED }

    override val hasDefaultValue: Boolean

        files: Collection<KtFile>,
        bindingTrace: BindingTrace,
        componentProvider: ComponentProvider
    ): AnalysisResult? {
        // Single-module [KtFe10AnalysisHandlerExtension] can be registered without specific use-site module.
        // Simple null-check below will skip the bail-out.
        if (useSiteModule != null &&
            module.name.asString().removeSurrounding("<", ">") != useSiteModule.moduleName

    override val parameter: KtValueParameterSymbol
        get() = withValidityAssertion { KtFe10DescValueParameterSymbol(descriptor.valueParameters.single(), analysisContext) }

    override val receiverParameter: KtReceiverParameterSymbol?
        get() = withValidityAssertion { descriptor.extensionReceiverParameter?.toKtReceiverParameterSymbol(analysisContext) }

            val irFile = irModuleFragment.files.single { (it.fileEntry as? PsiIrFileEntry)?.psiFile is KtCodeFragment }
            val irClass = irFile.declarations.single { it is IrClass && it.metadata is FirMetadataSource.CodeFragment } as IrClass
            val irFunction = irClass.declarations.single { it is IrFunction && it !is IrConstructor } as IrFunction

    }

    private fun tryMapPlatformType(type: KType, kClass: KClass<*>): HLParameterConversion? {
        if (kClass.isSubclassOf(Collection::class)) {
            val elementType = type.arguments.single().type ?: return HLIdParameterConversion
            return HLCollectionParameterConversion(
                parameterName = elementType.toParameterName(),
                mappingConversion = createConversion(elementType)

        List::class.createType(
            arguments = listOf(
                KTypeProjection(
                    variance = KVariance.INVARIANT,
                    type = type.arguments.single().type?.let(mappingConversion::convertType)
                )
            )
        )

    override val importsToAdd get() = mappingConversion.importsToAdd
}

class HLMapParameterConversion(

        )
    }
    add(FirErrors.ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_FUNCTION.errorFactory) { firDiagnostic ->
        AssigningSingleElementToVarargInNamedFormFunctionErrorImpl(
            firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }

        val ktArgumentMapping = LinkedHashMap<KtExpression, KtVariableLikeSignature<KtValueParameterSymbol>>()
        val parameterSymbol = arrayOfSymbol.valueParameters.single()

        for (firExpression in argumentList.arguments) {
            mapArgumentExpressionToParameter(
                firExpression,

                else -> KtFirGenericSubstitutor(substitutor, this@KtSymbolByFirBuilder)
            }
        }
    }

    /**
     * N.B. This functions lifts only a single layer of SUBSTITUTION_OVERRIDE at a time.
     */
    private inline fun <reified T : FirCallableDeclaration> T.unwrapSubstitutionOverrideIfNeeded(): T? {
        unwrapUseSiteSubstitutionOverride()?.let { return it }

- [`KT-56768`](https://youtrack.jetbrains.com/issue/KT-56768) K2. No error description on incomplete try catch declaration
- [`KT-52220`](https://youtrack.jetbrains.com/issue/KT-52220) FIR + LightTree - Consider building a single tree on parsing into LightTree
- [`KT-60601`](https://youtrack.jetbrains.com/issue/KT-60601) K2 / Maven: Overload resolution ambiguity between candidates inline method