@Override
                  protected Set<AnEnum> create(AnEnum[] elements) {
                    AnEnum[] otherElements = new AnEnum[elements.length - 1];
                    System.arraycopy(elements, 1, otherElements, 0, otherElements.length);
                    return Sets.immutableEnumSet(elements[0], otherElements);
                  }
                })
            .named("Sets.immutableEnumSet")