new Predicate<@Nullable Integer>() {
        @Override
        public boolean apply(@Nullable Integer i) {
          throw new AssertionFailedError("This predicate should never have been evaluated");
        }
      };

  /** Instantiable predicate with reasonable hashCode() and equals() methods. */
  static class IsOdd implements Predicate<@Nullable Integer>, Serializable {

      new Predicate<@Nullable Integer>() {
        @Override
        public boolean apply(@Nullable Integer i) {
          throw new AssertionFailedError("This predicate should never have been evaluated");
        }
      };

  /** Instantiable predicate with reasonable hashCode() and equals() methods. */
  static class IsOdd implements Predicate<@Nullable Integer>, Serializable {