/// <summary>
/// Activates the document in the docking manager, which makes it the active document.
/// </summary>
/// <param name="document">The document.</param>
/// <exception cref="ArgumentNullException">The <paramref name="document"/> is <c>null</c>.</exception>
public static void ActivateDocument(CustomLayoutDocument document)
{
Argument.IsNotNull("document", document);
LayoutDocumentPane.SelectedContentIndex = LayoutDocumentPane.IndexOfChild(document);
}
