automapper ignore in csharp

main.cs
public class Source
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
}

public class Destination
{
    public int Id { get; set; }
    public string Name { get; set; }
}

var config = new MapperConfiguration(cfg =>
{
    cfg.CreateMap<Source, Destination>()
        .ForMember(dest => dest.Id, opt => opt.MapFrom(src => src.Id))
        .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.Name))
        .ForMember(dest => dest.Description, opt => opt.Ignore()); // ignore Description property
});

IMapper mapper = config.CreateMapper();
var source = new Source { Id = 1, Name = "Test", Description = "Description" };
var destination = mapper.Map<Source, Destination>(source);
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