override val receiverType: KaType?
        get() = withValidityAssertion { symbol.receiverType }
    override val valueParameters: List<KaVariableLikeSignature<KaValueParameterSymbol>> by cached {
        firSymbol.valueParameterSymbols.map { KaFirVariableLikeDummySignature(token, it, firSymbolBuilder) }
    }

    override fun substitute(substitutor: KaSubstitutor): KaFirFunctionLikeSignature<S> = withValidityAssertion {

        requiredMembersPhase = FirResolvePhase.STATUS,
    ) ?: return

    scope.processFunctionsByName(OperatorNameConventions.EQUALS) { functionSymbol ->
        val parameterSymbol = functionSymbol.valueParameterSymbols.singleOrNull()
        if (parameterSymbol != null && parameterSymbol.resolvedReturnType.isNullableAny) {
            processor(functionSymbol)
        }
    }

            val functionSymbol = firSymbol.containingFunctionSymbol
            functionSymbol.fir.unwrapSubstitutionOverrideIfNeeded()?.let { unwrappedFunction ->
                val originalIndex = functionSymbol.valueParameterSymbols.indexOf(firSymbol)
                if (originalIndex == -1) {
                    errorWithAttachment("Containing function doesn't have the corresponding parameter") {