private static Set<RefClass> getRelatedClasses(RefPackage aPackage,
                                                 RefClass classToProcess) {
    final Set<RefClass> out = new HashSet<>();
    final Set<RefClass> dependencies =
      DependencyUtils.calculateDependenciesForClass(classToProcess);
    for (RefClass dependency : dependencies) {
      if (packageContainsClass(aPackage, dependency)) {
        out.add(dependency);
      }
    }

    final Set<RefClass> dependents =
      DependencyUtils.calculateDependentsForClass(classToProcess);
    for (RefClass dependent : dependents) {
      if (packageContainsClass(aPackage, dependent)) {
        out.add(dependent);
      }
    }
    return out;
  }
private static Set<RefClass> getRelatedClasses(RefPackage aPackage,
                                                 RefClass classToProcess)