Methods with C varargs should be hidden
As per https://github.com/ptomato/devdocs/issues/6, we should hide methods that use C varargs, such as Gtk.TreeViewColumn.new_with_attributes.
As per https://github.com/ptomato/devdocs/issues/6, we should hide methods that use C varargs, such as Gtk.TreeViewColumn.new_with_attributes.