// Expected type of `expression` is type of `x`
        val assignmentExpression =
            expression.unwrapQualified<KtBinaryExpression> { binaryExpr, expr -> binaryExpr.right == expr && binaryExpr.operationToken == KtTokens.EQ }
                ?: return null
        val variableExpression = assignmentExpression.left as? KtNameReferenceExpression ?: return null
        return getKtExpressionNonErrorType(variableExpression)
    }