/// <summary>
/// Allows you to save the mutable properties of the layer so you can restore them later
/// (esp. important for undo!). Mutable properties include the layer's name, whether it's
/// visible, and the metadata. This list might expand later.
/// </summary>
/// <returns>
/// An object that can be used later in a call to LoadProperties.
/// </returns>
/// <remarks>
/// It is important that derived classes call this in the correct fashion so as to 'chain'
/// the properties list together. The following is the correct pattern:
///
/// public override object SaveProperties()
/// {
/// object baseProperties = base.SaveProperties();
/// return new List(properties.Clone(), new List(baseProperties, null));
/// }
/// </remarks>
public virtual object SaveProperties()
{
return(properties.Clone());
}
