methods.singleOrNull { it.returnType != PsiType.VOID }?.let {
                            bindings.put(METHOD_FOR_FIR_FUNCTION, getter, Method(it.name, getAsmMethodSignatureWithCorrection(it)))
                        }
                    }
                    fir.setter?.let { setter ->
                        methods.singleOrNull { it.name.startsWith("set") }?.let {

            /* choose (for byte array)
             * public fun byteArrayOf(vararg elements: kotlin.Byte): kotlin.ByteArray
             */
            (it as? FirFunctionSymbol<*>)?.fir?.valueParameters?.singleOrNull()?.isVararg == true
        } as? FirNamedFunctionSymbol ?: return null
        return firSymbolBuilder.functionLikeBuilder.buildFunctionSymbol(firSymbol)
    }

    private val kotlinPackage = FqName("kotlin")

        val classId = function.containingClassLookupTag()?.classId ?: return null
        val classOrObject = classByClassId(classId, function.llFirSession.ktModule) ?: return null
        return classOrObject.declarations.singleOrNull()
    }

    private fun provideSourceForFunctionClass(klass: FirClass): PsiElement? {
        return classByClassId(klass.symbol.classId, klass.llFirSession.ktModule)
    }

            setValueSymbol?.fir?.buildSymbol(firSymbolBuilder)
        )
    }

    private inline fun <reified S : FirStatement> FirPropertyAccessor.singleStatementOfType(): S? =
        body?.statements?.singleOrNull() as? S

                // This is needed to find the JavaDoc of a package declaration in 'package-info.java'
                ?: (node as? PackageDeclaration)?.parentNode?.get()?.childNodes?.filterIsInstance<JavadocComment>()?.singleOrNull()?.parse()?.let { findVersionFromJavadoc(it) }
                ?: versionNotFound,
            nodeName(node, this, sourceFile)
        )

    private
    fun findVersionFromJavadoc(javadoc: Javadoc): String? =

        override val analysisContext: Fe10AnalysisContext
    ) : KtValueParameterSymbol(), KtFe10Symbol {
        val descriptor: ValueParameterDescriptor?
            get() = propertyDescriptor.setter?.valueParameters?.singleOrNull()

        override val hasDefaultValue: Boolean
            get() = withValidityAssertion { false }

        override val isVararg: Boolean
            get() = withValidityAssertion { false }

                .filterIsInstance<KtFe10AnalysisHandlerExtension>()
            return extensions.firstOrNull { it.useSiteModule == module }
                ?: extensions.singleOrNull { it.useSiteModule == null }
                ?: error(KtFe10AnalysisHandlerExtension::class.java.name + " should be registered")
        }
    }

    var resolveSession: ResolveSession? = null
        private set

                        // arrayOf call with a single vararg argument.
                        if (resolvedSymbol.callableId.asSingleFqName() in ArrayFqNames.ARRAY_CALL_FQ_NAMES)
                            argumentList.arguments.singleOrNull()?.convertConstantExpression(builder)
                                ?: KtArrayAnnotationValue(emptyList(), sourcePsi, token)
                        else null
                    }

    }

    private
    fun singleAbstractMethodOf(classNode: ClassNode) =
        classNode.methods.singleOrNull { it.access.run { !isStatic && isAbstract } }

    /**
     * Test if a method is a prime declaration or an overrides that change the signature.
     *

    return thisTypeAsKt.endsWith(ktTypeRawName)
}


private
fun KtFile.ktClassOf(member: CtClass) =
    collectDescendantsOfType<KtClassOrObject> { it.fqName?.asString() == member.name }.singleOrNull()


private
fun KtDeclaration.isDocumentedAsSince(version: String) =
    docComment?.isSince(version) == true


private
fun KDoc.isSince(version: String) =
    text.contains("@since $version")