boolean aBoolean = true;
    Long boxedLong = null;
    int anInt = 1;
    // With a boxed predicate, no overloads can be selected in phase 1
    // ambiguous without the call to .booleanValue to unbox the Boolean
    checkState(boxedBoolean.booleanValue(), "", 1);
    // ambiguous without the cast to Object because the boxed predicate prevents any overload from
    // being selected in phase 1

    boolean aBoolean = true;
    Long boxedLong = null;
    int anInt = 1;
    // With a boxed predicate, no overloads can be selected in phase 1
    // ambiguous without the call to .booleanValue to unbox the Boolean
    checkState(boxedBoolean.booleanValue(), "", 1);
    // ambiguous without the cast to Object because the boxed predicate prevents any overload from
    // being selected in phase 1

    ;

    abstract Multiset<Integer> get();
  }

  /**
   * Duplication of the old version of ConcurrentHashMultiset (with some unused stuff removed, like
   * serialization code) which used a map with boxed integers for the values.
   */
  private static final class OldConcurrentHashMultiset<E> extends AbstractMultiset<E> {
    /** The number of occurrences of each element. */

    }
  }

  /**
   * Implementation of {@link Stream#flatMap} with a primitive spliterator output type.
   *
   * @param <InElementT> the element type of the input spliterator
   * @param <OutElementT> the (boxed) element type of the output spliterators
   * @param <OutConsumerT> the specialized consumer type for the primitive output type
   * @param <OutSpliteratorT> the primitive spliterator type associated with {@code OutElementT}
   */

    }
  }

  /**
   * Implementation of {@link Stream#flatMap} with a primitive spliterator output type.
   *
   * @param <InElementT> the element type of the input spliterator
   * @param <OutElementT> the (boxed) element type of the output spliterators
   * @param <OutConsumerT> the specialized consumer type for the primitive output type
   * @param <OutSpliteratorT> the primitive spliterator type associated with {@code OutElementT}
   */

    } else {
      assertThat(actual).isWithin(ALLOWED_ERROR).of(expected);
    }
  }

  public void testBoxedDoubleStreamToStats() {
    Stats stats = megaPrimitiveDoubleStream().boxed().collect(toStats());
    assertThat(stats.count()).isEqualTo(MEGA_STREAM_COUNT);
    assertThat(stats.mean()).isWithin(ALLOWED_ERROR * MEGA_STREAM_COUNT).of(MEGA_STREAM_MEAN);
    assertThat(stats.populationVariance())

  }

  /**
   * Returns an immutable <i>view</i> of this array's values as a {@code List}; note that {@code
   * long} values are boxed into {@link Long} instances on demand, which can be very expensive. The
   * returned list should be used once and discarded. For any usages beyond that, pass the returned

  }

  /**
   * Returns an immutable <i>view</i> of this array's values as a {@code List}; note that {@code
   * double} values are boxed into {@link Double} instances on demand, which can be very expensive.
   * The returned list should be used once and discarded. For any usages beyond that, pass the

  }

  /**
   * Returns an immutable <i>view</i> of this array's values as a {@code List}; note that {@code
   * int} values are boxed into {@link Integer} instances on demand, which can be very expensive.
   * The returned list should be used once and discarded. For any usages beyond that, pass the

        .snapshot();
  }

  /**
   * Returns a {@link Collector} which accumulates statistics from a {@link java.util.stream.Stream}
   * of any type of boxed {@link Number} into a {@link Stats}. Use by calling {@code
   * boxedNumericStream.collect(toStats())}. The numbers will be converted to {@code double} values
   * (which may cause loss of precision).
   *