docs: private static Set<PackingPlan.ContainerPlan> buildContainerPlans(
        Map<Integer, Container> containerInstances) {
      Set<PackingPlan.ContainerPlan> containerPlans = new LinkedHashSet<>();
  
      for (Integer containerId : containerInstances.keySet()) {
        Container container = containerInstances.get(containerId);
        if (container.getInstances().size() == 0) {
          continue;
        }
  
        Resource totalUsedResources = container.getTotalUsedResources();
        Resource resource = new Resource(
            Math.round(totalUsedResources.getCpu()),
            totalUsedResources.getRam(), totalUsedResources.getDisk());
  
        PackingPlan.ContainerPlan containerPlan =
            new PackingPlan.ContainerPlan(containerId, container.getInstances(), resource);
  
        containerPlans.add(containerPlan);
      }
  
      return containerPlans;
    }