public <N1 extends Number, N2 extends Number, N11 extends N1>
      void testisSupertypeOf_equalWildcardTypes() {
    assertAssignable(
        new TypeToken<List<? extends N1>>() {}, new TypeToken<List<? extends N1>>() {});
    assertAssignable(new TypeToken<List<? super N1>>() {}, new TypeToken<List<? super N1>>() {});
    assertAssignable(
        new TypeToken<List<? extends Number>>() {}, new TypeToken<List<? extends Number>>() {});

  K checkKey(K key) {
    return checkNotNull(key);
  }

  @Override
  V checkValue(V value) {
    return checkNotNull(value);
  }

  /**
   * @serialData the key class, value class, number of entries, first key, first value, second key,
   *     second value, and so on.
   */
  @GwtIncompatible // java.io.ObjectOutputStream
  private void writeObject(ObjectOutputStream stream) throws IOException {

    }

    @Override
    public String toString() {
      return iterable.toString();
    }
    // no equals and hashCode; it would break the contract!
  }

  /** Returns the number of elements in {@code iterable}. */
  public static int size(Iterable<?> iterable) {
    return (iterable instanceof Collection)
        ? ((Collection<?>) iterable).size()
        : Iterators.size(iterable.iterator());

            .isSubtypeOf(superclass));
  }

  public void testGetSubtypeOf_impossibleWildcard() {
    TypeToken<List<? extends Number>> numberList = new TypeToken<List<? extends Number>>() {};
    abstract class StringList implements List<String> {}
    assertThrows(IllegalArgumentException.class, () -> numberList.getSubtype(StringList.class));
  }

    Ordering<Number> numbers = Ordering.explicit((Number) 1);
    Ordering<Integer> integers = Ordering.explicit(1);

    // Like by like equals like
    Ordering<Number> a = numbers.compound(numbers);

    // The compound takes the more specific type of the two, regardless of order

    Ordering<Number> b = numbers.compound(objects);
    Ordering<Number> c = objects.compound(numbers);

    Ordering<Number> numbers = Ordering.explicit((Number) 1);
    Ordering<Integer> integers = Ordering.explicit(1);

    // Like by like equals like
    Ordering<Number> a = numbers.compound(numbers);

    // The compound takes the more specific type of the two, regardless of order

    Ordering<Number> b = numbers.compound(objects);
    Ordering<Number> c = objects.compound(numbers);

          URISyntaxException.class);

  @Param Validator validator;
  @Param Result result;
  @Param ExceptionType exceptionType;
  /**
   * The number of other exception types in the cache of known-good exceptions and the number of
   * other {@code ClassValue} entries for the exception type to be tested. This lets us evaluate

      }
    }

    /**
     * Removes a number of occurrences of the specified element from this multiset. If the multiset
     * contains fewer than this number of occurrences to begin with, all occurrences will be
     * removed.
     *
     * @param element the element whose occurrences should be removed
     * @param occurrences the number of occurrences of the element to remove

   */
  public void addAll(Iterable<? extends Number> values) {
    for (Number value : values) {
      add(value.doubleValue());
    }
  }

  /**
   * Adds the given values to the dataset.
   *
   * @param values a series of values, which will be converted to {@code double} values (this may
   *     cause loss of precision)
   */
  public void addAll(Iterator<? extends Number> values) {
    while (values.hasNext()) {

    public Builder<E> add(E... elements) {
      super.add(elements);
      return this;
    }

    /**
     * Adds a number of occurrences of an element to this {@code ImmutableMultiset}.
     *
     * @param element the element to add
     * @param occurrences the number of occurrences of the element to add. May be zero, in which
     *     case no change will be made.
     * @return this {@code Builder} object