*/
@Suppress("UNCHECKED_CAST")
private fun <T : CallableDescriptor> T.unwrapUseSiteSubstitutionOverride(): T {
    var current: CallableDescriptor = this
    while (original != current) {
        current = current.original
    }
    return current as T
}

internal fun KotlinType.toKtType(analysisContext: Fe10AnalysisContext): KtType {

     *
     * To properly resolve qualifier parts in the middle,
     * we need to resolve the whole qualifier to understand which parts of the qualifier are package or class qualifiers.
     * And then we will be able to resolve the qualifier selected by the user to the proper class, package or callable.
     *
     * It's possible that the whole qualifier is invalid, in this case we still want to resolve our [selectedFqName].

        var parent = parent
        while (parent is KtDotQualifiedExpression) {
            if (parent.selectorExpression !== this) return true
            parent = parent.parent
        }
        return false
    }

    private fun KtSimpleNameExpression.isPartOfUserTypeRefQualifier(): Boolean {
        var parent = parent
        while (parent is KtUserType) {

            val mappingForType = type.toTypeArgumentMapping() ?: continue

            val queue = ArrayDeque<TypeArgumentMapping>()
            queue.addLast(mappingForType)

            while (queue.isNotEmpty()) {
                val (typeParameterOwner, mapping) = queue.removeFirst()
                for (superType in typeParameterOwner.typeConstructor.supertypes) {

                    .sortedBy { it.id }
            }.distinct()

        return exitPoints.size > 1
    }

    private fun CFGNode<*>.unwrap(): CFGNode<*> {
        var current = this

        while (current.isExitNode()) {
            val following = current.followingNodes
            if (following.size == 1) {
                current = following.first()
            } else {
                break
            }

            type = javaType
        }

        val javaTypeParameterStack = MutableJavaTypeParameterStack()

        var psiClass = PsiTreeUtil.getContextOfType(useSitePosition, PsiClass::class.java, false)
        while (psiClass != null && psiClass.name == null || psiClass is PsiTypeParameter) {
            psiClass = PsiTreeUtil.getContextOfType(psiClass, PsiClass::class.java, true)
        }
        if (psiClass != null) {

            // - The "reference" in a constructor call. E.g. `C` in `C()`
            is KtConstructorCalleeExpression ->
                false

            // - Labels themselves: `@label` in return`@label` or `label@`while...
            is KtLabelReferenceExpression ->
                false

            // - The operation symbol itself in binary and unary operations: `!!`, `+`...
            is KtOperationReferenceExpression ->

        //   fun foo(x: Int) {
        //     when (x) {
        //       -2_147_483_628 -> ...
        //   } }
        // That constant is encoded as `unaryMinus` call with the const 2147483628 of long type, while the resolved type is Int.
        // After computing the compile time constant, we need to adjust its type here.
        val expression =
            if (expectedKind != null && expectedKind != kind && value is Number) {

     * we won't be able to handle this request, and just return null. So the user will only be able to see the type
     * of the whole expression instead, and that is not what he wants.
     */
    private fun FirNamedReference.getCorrespondingTypeIfPossible(): ConeKotlinType? =
        findOuterPropertyAccessExpression()?.resolvedType

    /**

    private fun KtCallInfo?.toKtCallCandidateInfos(bestCandidateDescriptors: Set<CallableDescriptor>): List<KtCallCandidateInfo> {
        // TODO: We should prefer to compare symbols instead of descriptors, but we can't do so while symbols are not cached.
        fun KtCall.isInBestCandidates(): Boolean {
            val descriptor = this.safeAs<KtFunctionCall<*>>()?.descriptor as? CallableDescriptor