MenuItem.setLink

void setLink(string link, gio.menu_model.MenuModel model = null)

Creates a link from menu_item to model if non-null, or unsets it.

Links are used to establish a relationship between a particular menu item and another menu. For example, [gio.types.MENU_LINK_SUBMENU] is used to associate a submenu with a particular menu item, and [gio.types.MENU_LINK_SECTION] is used to create a section. Other types of link can be used, but there is no guarantee that clients will be able to make sense of them. Link types are restricted to lowercase characters, numbers and '-'. Furthermore, the names must begin with a lowercase character, must not end with a '-', and must not contain consecutive dashes.

Parameters

`link`	type of link to establish or unset
`model`	the #GMenuModel to link to (or null to unset)