}

    val ConeKotlinType.candidateClassId: ClassId?
        get() {
            return when (this) {
                is ConeErrorType -> when (val diagnostic = this.diagnostic) {
                    // Tolerate code that misses type parameters while shortening it.
                    is ConeUnmatchedTypeArgumentsError -> diagnostic.symbol.classId
                    else -> null

        }

        return when (this) {
            is FirResolvable, is FirVariableAssignment -> {
                when (val calleeReference = toReference(analysisSession.useSiteSession)) {
                    is FirResolvedErrorReference -> transformErrorReference(this, calleeReference)
                    is FirResolvedNamedReference -> when (calleeReference.resolvedSymbol) {