Gtk.EntryCompletion.prototype.insert_action_text

function insert_action_text(index_:Number, text:String):void {
    // Gjs wrapper for gtk_entry_completion_insert_action_text()
}

Inserts an action in completion's action item list at position index_ with text text. If you want the action item to have markup, use Gtk.EntryCompletion.prototype.insert_action_markup.

Since 2.4