firSymbol.fir.unwrapSubstitutionOverrideIfNeeded()?.let {
                return buildFunctionSymbol(it.symbol)
            }
            if (firSymbol.dispatchReceiverType?.contains { it is ConeStubType } == true) {
                return buildFunctionSymbol(
                    firSymbol.originalIfFakeOverride()

        return when (parent) {
            /**
             * NON-EXPRESSION PARENTS
             */
            // KtValueArguments are a container for call-sites, and use exactly the
            // argument expression they wrap.
            is KtValueArgument ->
                parent.getArgumentExpression() == child

            is KtDelegatedSuperTypeEntry ->

        typeMapper.mapType(type, mode, signatureWriter)

        val canonicalSignature = signatureWriter.toString()
        require(!canonicalSignature.contains(SpecialNames.ANONYMOUS_STRING))

        if (canonicalSignature.contains("L<error>")) return null
        if (canonicalSignature.contains(SpecialNames.NO_NAME_PROVIDED.asString())) return null

        val signature = StringCharacterIterator(canonicalSignature)

        correspondingImport.importPath?.pathStr
    }

    val canonicalSignature = signatureWriter.toString()
    require(!canonicalSignature.contains(SpecialNames.ANONYMOUS_STRING))

    if (canonicalSignature.contains("L<error>")) return null
    if (canonicalSignature.contains(SpecialNames.NO_NAME_PROVIDED.asString())) return null

    val signature = StringCharacterIterator(canonicalSignature)

import org.jetbrains.kotlin.types.TypeUtils
import org.jetbrains.kotlin.types.UnwrappedType
import org.jetbrains.kotlin.types.expressions.OperatorConventions
import org.jetbrains.kotlin.types.typeUtil.contains
import org.jetbrains.kotlin.util.OperatorNameConventions
import org.jetbrains.kotlin.utils.addToStdlib.safeAs

internal class KtFe10CallResolver(
    override val analysisSession: KtFe10AnalysisSession