static public void AddClass(this ClassLibrary item, Type type, string layout, string text)
{
item.AddClass(
new CmlClass_Entity(type, layout, CmlEntity.DOMify(text))
);
}
static public void AddClasses(this ClassLibrary item, IEnumerable <CmlClass> to_add)
{
to_add.Process(c => item.AddClass(c));
}