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);
}