ImmutableList.Builder<Node> scheduledNodes = ImmutableList.builderWithExpectedSize(nodeMapping.size());
        for (Node node : nodeMapping) {
            node.maybeUpdateOrdinalGroup();
            createOrdinalRelationships(node, scheduledNodes);
            scheduledNodes.add(node);
        }

        nodeMapping.addAll(ordinalNodeAccess.getAllNodes());

     *
     * That way we can ensure that the node is executed after all its dependencies, and we get rid of potential cycles.
     */
    public void maybeUpdateOrdinalGroup() {
        OrdinalGroup ordinal = getGroup().asOrdinal();
        OrdinalGroup newOrdinal = ordinal;
        for (Node successor : getHardSuccessors()) {