is FirSpreadArgumentExpression -> {
                expression.convertConstantExpression(builder)
            }

            is FirVarargArgumentsExpression -> {
                // Vararg arguments may have multiple independent expressions associated.
                // Choose one to be the representative PSI value for the entire assembled argument.

                ?: error("allCandidates is null even when collectAllCandidates = true")

            candidates.flatMap { candidate ->
                // The current BindingContext does not have the diagnostics for each individual candidate, only for the resolved call.
                // If there are multiple candidates, we can get each one's diagnostics by reporting it to a new BindingTrace.

    //TODO Check thread safety
    session.jvmTypeMapper.mapType(this, mode, signatureWriter) {
        val containingFile = useSitePosition.containingKtFile
        // parameters for default setters does not have kotlin origin, but setter has
            ?: (useSitePosition as? KtLightParameter)?.parent?.parent?.containingKtFile
            ?: return@mapType null