public Set<FiringSequence> getWrongContinuationsRecursively() { Set<FiringSequence> wrongContinuations = new HashSet<FiringSequence>(); for (Transition disallowedNextTransition : getDisallowedNextTransitions()) { FiringSequence firingSequence = new FiringSequence(); firingSequence.add(disallowedNextTransition); wrongContinuations.add(firingSequence); } for (LanguageNode nextNode : getNextNodes()) { for (FiringSequence nextFiringSequence : nextNode.getWrongContinuationsRecursively()) { FiringSequence firingSequence = new FiringSequence(); firingSequence.add(nextNode.transition); firingSequence.addAll(nextFiringSequence); wrongContinuations.add(firingSequence); } } return wrongContinuations; }