C#: using TMDbLib to retrive person images

I'm trying to retrieve all a persons profile images  of a person C#.Net library for TheMovieDB.

https://www.themoviedb.org/person/25541-katherine-heigl/images/profiles?language=en-US
Shows several images

// This gets info about a person
var TMDBperson = client.GetPersonAsync(person.Id ).Result;

// then loop through but it's null
            ImagesflowLayoutPanel.Controls.Clear();
            foreach (var image in TMDBperson.Images.Profiles)
            {
                var PIB = new PersonImageBox(image);
                ImagesflowLayoutPanel.Controls.Add(PIB);
            }


// you can chain queries together something like this
// but not happy
var TMDBperson = client.GetPersonAsync(person.Id, TMDbLib.Objects.People.ProfileImages ).Result;

Select all Open in new window

Looking at https://developers.themoviedb.org/3/people/get-person-images
There should be several images for Katherine Heigl So How do I retrieve them