public void addMember(Node node) {
        for (FinalizerGroup group : finalizerGroups) {
            group.addMember(node);
        }
    }

    @Override
    public void removeMember(Node node) {
        for (FinalizerGroup group : finalizerGroups) {
            group.removeMember(node);
        }
    }

    @Override
    public Set<FinalizerGroup> getFinalizerGroups() {
        return finalizerGroups;
    }

        // So visit all the finalizer groups reachable from groups that the node belongs to and the finalized nodes of those groups
        Set<FinalizerGroup> seen = new HashSet<>();
        List<FinalizerGroup> queue = new ArrayList<>(groups);
        while (!queue.isEmpty()) {
            FinalizerGroup group = queue.remove(0);
            if (!group.isCanCancelSelf()) {
                // Has started running at least one finalized node, so cannot cancel

            // This node is a finalizer, decorate the current group to add finalizer behaviour
            NodeGroup oldGroup = getGroup();
            FinalizerGroup finalizerGroup = new FinalizerGroup(this, oldGroup);
            setGroup(finalizerGroup);
        }
    }

            return false;
        }
    };

    @Nullable
    public abstract OrdinalGroup asOrdinal();

    public abstract boolean isReachableFromEntryPoint();

    @Nullable
    public FinalizerGroup asFinalizer() {
        return null;
    }

    public Node.DependenciesState checkSuccessorsCompleteFor(Node node) {
        return Node.DependenciesState.COMPLETE_AND_SUCCESSFUL;
    }