public override void add(NovelElementIF novel)
{
if (novel.GetType().IsInstanceOfType(typeof(Page)))
{
throw new Exception("Page cannot contain Page");
}
base.elements.Add(novel);
}
public override void add(NovelElementIF novel)
{
if (novel.GetType() == typeof(LineOfText))
{
throw new Exception("LineOfText cannot contain LineOfText");
}
base.elements.Add(novel);
}