private void storeIteration(LayoutGroupIteration iteration, Amendment amendment) {
IterationHistoryToken iterationToken = new IterationHistoryToken();
iterationToken.setDate(new Date());
iterationToken.setCoreVersion(amendment);
iterationToken.setLayoutGroup(iteration.getLayoutGroup());
iterationToken.setLayoutGroupIterationId(iteration.getId());
iterationToken.setName(iteration.getName());
iterationToken.setProjectId(iteration.getContainerId());
em().merge(iterationToken);
}
