else -> null
    }
}

internal fun ClassifierDescriptor.toKtClassifierSymbol(analysisContext: Fe10AnalysisContext): KaClassifierSymbol? {
    return when (this) {
        is TypeAliasDescriptor -> KaFe10DescTypeAliasSymbol(this, analysisContext)
        is TypeParameterDescriptor -> KaFe10DescTypeParameterSymbol(this, analysisContext)
        is ClassDescriptor -> toKaClassSymbol(analysisContext)

    private fun getBoundClass(type: KotlinType): ClassDescriptor? {
        return when (val declaration = type.constructor.declarationDescriptor) {
            is ClassDescriptor -> declaration
            is TypeAliasDescriptor -> getBoundClass(declaration.expandedType)
            else -> null
        }
    }

    private fun collectSuperClasses(type: KotlinType): Set<ClassDescriptor> {