glib/gaction.go
func (v *Action) ChangeState(value *Variant) {
	C.g_action_change_state(v.native(), value.native())
}
func (v *Action) ChangeState(value *Variant) {
	C.g_action_change_state(v.native(), value.native())
}
// ChangeState is a wrapper around g_action_change_state