public int compare(Comparable<?> left, Comparable<?> right) {
    checkNotNull(left); // right null is caught later
    if (left == right) {
      return 0;
    }

    return ((Comparable<Object>) right).compareTo(left);
  }

  @Override
  public <S extends Comparable<?>> Ordering<S> reverse() {
    return Ordering.natural();
  }

  // Override the min/max methods to "hoist" delegation outside loops

  @Override

    }

    @Override
    public long getDelay(TimeUnit unit) {
      Preconditions.checkNotNull(unit, "unit must not be null!");
      return 0;
    }

    @Override
    public int compareTo(Delayed other) {
      Preconditions.checkNotNull(other, "other must not be null!");
      return 0;
    }
  }

  @Override
  public ListenableScheduledFuture<?> scheduleAtFixedRate(

    }

    @Override
    public long getDelay(TimeUnit unit) {
      Preconditions.checkNotNull(unit, "unit must not be null!");
      return 0;
    }

    @Override
    public int compareTo(Delayed other) {
      Preconditions.checkNotNull(other, "other must not be null!");
      return 0;
    }
  }

  @Override
  public ListenableScheduledFuture<?> scheduleAtFixedRate(

    assertLessThan(RUNNING, FAILED);

    assertLessThan(STOPPING, FAILED);
    assertLessThan(STOPPING, TERMINATED);
  }

  private static <T extends Comparable<? super T>> void assertLessThan(T a, T b) {
    if (a.compareTo(b) >= 0) {
      fail(String.format(Locale.ROOT, "Expected %s to be less than %s", a, b));
    }
  }

   * The lifecycle states of a service.
   *
   * <p>The ordering of the {@link State} enum is defined such that if there is a state transition
   * from {@code A -> B} then {@code A.compareTo(B) < 0}. N.B. The converse is not true, i.e. if
   * {@code A.compareTo(B) < 0} then there is <b>not</b> guaranteed to be a valid state transition
   * {@code A -> B}.
   *
   * @since 9.0 (in 1.0 as {@code com.google.common.base.Service.State})
   */

    @Override
    public String toString() {
      return rootLocaleFormat("%s%s(%s)", typeSignature, name, getTypesString(parameterTypes));
    }

    @Override
    public int compareTo(MethodSignature o) {
      return toString().compareTo(o.toString());
    }
  }

  private static final class TypeSignature {
    final List<TypeParameterSignature> parameterSignatures;

    @Override
    public String toString() {
      return rootLocaleFormat("%s%s(%s)", typeSignature, name, getTypesString(parameterTypes));
    }

    @Override
    public int compareTo(MethodSignature o) {
      return toString().compareTo(o.toString());
    }
  }

  private static final class TypeSignature {
    final List<TypeParameterSignature> parameterSignatures;

                    return -1;
                }
                final String k2 = o2.getKey();
                if (LANG_KEY.equals(k2)) {
                    return -1;
                }
                return k1.compareTo(k2);
            });
            return new LinkedHashSet<>(list);
        }
        return parent.entrySet();
    }

      return new Ordering<Entry<String, Integer>>() {
        @Override
        public int compare(Entry<String, Integer> left, Entry<String, Integer> right) {
          return left.getKey().compareTo(right.getKey());
        }
      }.sortedCopy(insertionOrder);
    }

    @Override
    public List<Entry<String, Integer>> create(Object... elements) {

        return rank == that.rank;
    }

    public int hashCode() {
        return rank;
    }

    public String toString() {
        return key;
    }

    public int compareTo(ArtifactStatus s) {
        return rank - s.rank;
    }