Update the code for the 'FullName' property to pass the test

// {
using System;
using Xunit;
 
namespace dotnet
{
// }
    public class SalesPerson
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public decimal TotalSales { get; set; }
        public string FullName => "";
        public decimal CalculateCommission(decimal percentage) => percentage;
    }
// {
}
// }