return null
        }
        return try {
            f()
        } finally {
            variablesInProcessOfEvaluation.get().remove(variableSymbol)
        }
    }

    // TODO: Handle boolean operators, class reference, array, annotation values, etc.
    fun evaluate(
        fir: FirElement?,
    ): FirLiteralExpression? =
        when (fir) {
            is FirPropertyAccessExpression -> {