`object
val virtual obj : [> `toolbutton ] Gobject.obj
method icon_widget : GObj.widget
method label : string
method label_widget : GObj.widget
method set_icon_widget : GObj.widget -> unit
method set_label : string -> unit
method set_label_widget : GObj.widget -> unit
method set_stock_id : GtkStock.id -> unit
method set_use_underline : bool -> unit
method stock_id : GtkStock.id
method use_underline : bool
end`