override fun substitute(substitutor: KtSubstitutor): KtVariableLikeSignature<S> = withValidityAssertion {
        KtFe10VariableLikeSignature(
            symbol,
            substitutor.substitute(returnType),
            receiverType?.let { substitutor.substitute(it) },
        )
    }

    override fun equals(other: Any?): Boolean {

    override fun substitute(substitutor: KtSubstitutor): KtFunctionLikeSignature<S> = withValidityAssertion {
        KtFe10FunctionLikeSignature(
            symbol,
            substitutor.substitute(returnType),
            receiverType?.let { substitutor.substitute(it) },
            valueParameters.map { valueParameter ->

    processClassifiersByNameWithSubstitution(name) { classifier, substitutor ->
        val firDeclaration = classifier.fir
        if (firDeclaration is FirMemberDeclaration && firDeclaration.isInner) {
            processor(classifier, substitutor)
        }
    }

        // supertypes.
        delegate.processClassifiersByNameWithSubstitution(name) { classifier, substitutor ->
            if (classifier is FirRegularClassSymbol && classifier.fir.isDeclared()) {
                processor(classifier, substitutor)
            }
        }
    }

    override fun toString(): String = "Declared member scope for $delegate with owning class `${owner.classId}`"

                    return ApplicableAsFunctionalVariableCall(substitutor, receiverCastRequired, token)
                }

                return ApplicableAsExtensionCallable(substitutor, receiverCastRequired, token)
            }

            return implicitReceivers.firstNotNullOfOrNull(::processReceiver)
                ?: processReceiver(null)

        }
        return when (substitutors.size) {
            0 -> KtSubstitutor.Empty(token)
            else -> {
                val chained = substitutors.reduce { left, right -> left.chain(right) }
                firSymbolBuilder.typeBuilder.buildSubstitutor(chained)
            }
        }
    }


    private fun collectInheritancePath(
        baseSymbol: FirClassSymbol<*>,

import org.jetbrains.kotlin.analysis.api.types.KtSubstitutor
import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutorByMap

internal class KtFirSubstitutorFactory(
    override val analysisSession: KtFirAnalysisSession
) : KtSubstitutorFactory(), KtFirAnalysisSessionComponent {

    override fun buildSubstitutor(builder: KtSubstitutorBuilder): KtSubstitutor {

        return createConeSubstitutorFromTypeArguments(rootModuleSession, discardErrorTypes)?.toKtSubstitutor()
    }

    fun FirQualifiedAccessExpression.createSubstitutorFromTypeArguments(
        callableSymbol: FirCallableSymbol<*>,
        discardErrorTypes: Boolean = false
    ): KtSubstitutor {

type Token struct {
	ScanToken
	text string
}

// Make returns a Token with the given rune (ScanToken) and text representation.
func Make(token ScanToken, text string) Token {
	// Substitute the substitutes for . and /.
	text = strings.ReplaceAll(text, "\u00B7", ".")
	text = strings.ReplaceAll(text, "\u2215", "/")
	return Token{ScanToken: token, text: text}
}

func (l Token) String() string {

import org.jetbrains.kotlin.analysis.api.types.KtSubstitutor

internal class KtFe10SubstitutorFactory(
    override val analysisSession: KtFe10AnalysisSession
) : KtSubstitutorFactory(), Fe10KtAnalysisSessionComponent {

    override fun buildSubstitutor(builder: KtSubstitutorBuilder): KtSubstitutor {
        if (builder.mappings.isEmpty()) return KtSubstitutor.Empty(token)
        TODO()
    }