private fun DeclarationDescriptor.isDelegatedIfRequired(): Boolean =
            !forDelegatedMembersOnly || this is CallableMemberDescriptor && kind == CallableMemberDescriptor.Kind.DELEGATION

        private inline fun <reified D : DeclarationDescriptor> Collection<D>.mapToDelegatedIfRequired(): Collection<D> {
            if (!forDelegatedMembersOnly) return this
            return map {

            }
        }
    }

    /**
     * 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 }

        unwrapInheritanceSubstitutionOverrideIfNeeded()?.let { return it }

        patchIfNeeded(expression.symbol) { expression.symbol = it }
        super.visitClassReference(expression)
    }

    @OptIn(UnsafeDuringIrConstructionAPI::class)
    private inline fun <reified T : IrSymbol> patchIfNeeded(irSymbol: T?, patcher: (T) -> Unit) {
        if (irSymbol != null) {
            val irDeclaration = irSymbol.owner as? IrMetadataSourceOwner ?: return

            Errors.UNRESOLVED_REFERENCE_WRONG_RECEIVER,
            Errors.CALLABLE_REFERENCE_RESOLUTION_AMBIGUITY,
            Errors.TYPE_PARAMETER_AS_REIFIED,
            Errors.DEFINITELY_NON_NULLABLE_AS_REIFIED,
            Errors.REIFIED_TYPE_FORBIDDEN_SUBSTITUTION,
            Errors.REIFIED_TYPE_UNSAFE_SUBSTITUTION,
            Errors.CANDIDATE_CHOSEN_USING_OVERLOAD_RESOLUTION_BY_LAMBDA_ANNOTATION,
            Errors.RESOLUTION_TO_CLASSIFIER,

            }
        }

        return DefiniteNullability.UNKNOWN
    }
}

private data class KtCallWithArgument(val call: KtCallElement, val argument: KtExpression)

private inline fun <reified R : Any> PsiElement.unwrapQualified(check: (R, PsiElement) -> Boolean): R? {
    val parent = nonContainerParent
    return when {
        parent is R && check(parent, this) -> parent