private static final Ordering<Invokable<?, ?>> BY_PARAMETERS =
      new Ordering<Invokable<?, ?>>() {
        @Override
        public int compare(Invokable<?, ?> left, Invokable<?, ?> right) {
          return Ordering.usingToString().compare(left.getParameters(), right.getParameters());
        }
      };

  private static final Ordering<Invokable<?, ?>> BY_NUMBER_OF_PARAMETERS =
      new Ordering<Invokable<?, ?>>() {
        @Override

   * <p>The comparator is serializable.
   *
   * <p><b>Java 8+ users:</b> Use {@code Comparator.comparing(Object::toString)} instead.
   */
  @GwtCompatible(serializable = true)
  public static Ordering<Object> usingToString() {
    return UsingToStringOrdering.INSTANCE;
  }

  /**
   * Returns an arbitrary ordering over all objects, for which {@code compare(a, b) == 0} implies

   * <p>The comparator is serializable.
   *
   * <p><b>Java 8+ users:</b> Use {@code Comparator.comparing(Object::toString)} instead.
   */
  @GwtCompatible(serializable = true)
  public static Ordering<Object> usingToString() {
    return UsingToStringOrdering.INSTANCE;
  }

  /**
   * Returns an arbitrary ordering over all objects, for which {@code compare(a, b) == 0} implies

  private static final Ordering<Invokable<?, ?>> BY_PARAMETERS =
      new Ordering<Invokable<?, ?>>() {
        @Override
        public int compare(Invokable<?, ?> left, Invokable<?, ?> right) {
          return Ordering.usingToString().compare(left.getParameters(), right.getParameters());
        }
      };

  private static final Ordering<Invokable<?, ?>> BY_NUMBER_OF_PARAMETERS =
      new Ordering<Invokable<?, ?>>() {
        @Override