if (hasBeenScheduled) {
            return;
        } else {
            hasBeenScheduled = true;
        }

        Set<Node> finalizedNodesToBlockOn = findFinalizedNodesThatDoNotIntroduceACycle(reachableGroups);
        WaitForNodesToComplete waitForFinalizers = new WaitForNodesToComplete(finalizedNodesToBlockOn);