/// <summary>
/// Adds a GUI element to the field layout.
/// </summary>
/// <param name="index">Index into the GUI layout at which the field layout start at.</param>
/// <param name="element">GUI element to insert into the layout.</param>
public void AddElement(int index, GUIElement element)
{
parentLayout.InsertElement(index + elements.Count, element);
elements.Add(element);
}