Customer Entity, after new requirements.

roaddd-dtosandviewmodels-customerentity-after.cs

public class Customer : Entity
{
    [Id]
    public Guid Id { get; set; }
	
    [Required]
    [MaxLength(50)
    public string Name { get; set; }
	
    public DateTime BirthDate { get; set; }
	
    public CustomerLevel Level { get; set; }
}