Method GTK2.IconFactory()->add()

Method add: GTK2.IconFactory add(string stock_id, GTK2.IconSet icon_set)
Description: Adds the given icon_set to the icon factory, under the name of stock_id. stock_id should be namespaced for your application, e.g. "myapp-whatever-icon". Normally applications create a GTK2.IconFactory, then add it to the list of default factories with add_default(). Then they pass the stock_id to widgets such as GTK2.Image to display the icon. Themes can provide an icon with the same name (such as "myapp-whatever-icon") to override your application's default icons. If an icon already existed in this factory for stock_id, it is unreferenced and replaced with the new icon_set.