pub trait ActionMapImplExt: ObjectSubclass {
fn parent_lookup_action(
&self,
action_map: &Self::Type,
action_name: &str
) -> Option<Action>;
fn parent_add_action(&self, action_map: &Self::Type, action: &Action);
fn parent_remove_action(&self, action_map: &Self::Type, action_name: &str);
}