*       {@code r.contains(c1) && r.contains(c3)} implies {@code r.contains(c2)}). This means that a
 *       {@code Range<Integer>} can never be used to represent, say, "all <i>prime</i> numbers from
 *       1 to 100."
 *   <li>When evaluated as a {@link Predicate}, a range yields the same result as invoking {@link
 *       #contains}.