gtk/gtk_since_3_12.go
func (v *MenuButton) SetPopover(popover *Popover) {
	C.gtk_menu_button_set_popover(v.native(), popover.toWidget())
}
func (v *MenuButton) SetPopover(popover *Popover) {
	C.gtk_menu_button_set_popover(v.native(), popover.toWidget())
}
/*
 * MenuButton
 */
// SetPopover is a wrapper around gtk_menu_button_set_popover().