blah.cs

    public class Name
    {
        public Name(Optional<string> fullName, Optional<string>  firstName, Optional<string>  lastName)
        {
            FirstName = firstName;
            LastName = lastName;
            FullName = fullName;

        }
        public Optional<string>  FullName {get;  set;}
        public Optional<string>  FirstName {get;  set;}
        public Optional<string>  LastName {get;  set;}
    }