public void RemoveImageryComponent(ImageryComponent img)
 {
     throw new NotImplementedException();
 }
 /// <summary>
 /// Add an ImageryComponent to this ImagerySection.
 /// </summary>
 /// <param name="img">
 /// ImageryComponent to be added to the section (a copy is made)
 /// </param>
 public void AddImageryComponent(ImageryComponent img)
 {
     d_images.Add(img);
 }