public static <T> Collector<T, ?, Optional<T>> toOptional() {
    return (Collector) TO_OPTIONAL;
  }

  private static final Object NULL_PLACEHOLDER = new Object();

  private static final Collector<@Nullable Object, ?, @Nullable Object> ONLY_ELEMENT =
      Collector.<@Nullable Object, ToOptionalState, @Nullable Object>of(
          ToOptionalState::new,
          (state, o) -> state.add((o == null) ? NULL_PLACEHOLDER : o),

  }

  /**
   * A sensible definition of {@link #subMultiset(Object, BoundType, Object, BoundType)} in terms of
   * {@link #headMultiset(Object, BoundType) headMultiset} and {@link #tailMultiset(Object,
   * BoundType) tailMultiset}.
   *
   * <p>If you override either of these methods, you may wish to override {@link
   * #subMultiset(Object, BoundType, Object, BoundType)} to forward to this implementation.
   */

  abstract static class SuperClass {
    public abstract void overriddenInSubclassNowhereAnnotated(Object o);

    public abstract void overriddenAndAnnotatedInSubclass(Object o);
  }

  static class SubClass extends SuperClass {
    final List<Object> overriddenInSubclassNowhereAnnotatedEvents = new ArrayList<>();
    final List<Object> overriddenAndAnnotatedInSubclassEvents = new ArrayList<>();

    @Override

        return headerList;
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getSearchWord();
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);

			t.Errorf("%s: Expected the object name to be `%s`, but instead found `%s`", instanceType, "newPrefix", result.Objects[0].Name)
		}
		if result.Objects[1].Name != "newPrefix2" {
			t.Errorf("%s: Expected the object name to be `%s`, but instead found `%s`", instanceType, "newPrefix", result.Objects[1].Name)
		}
		if result.Objects[2].Name != "obj0" {

  }

  private CharStreams() {}

  /**
   * Copies all characters between the {@link Readable} and {@link Appendable} objects. Does not
   * close or flush either object.
   *
   * @param from the object to read from
   * @param to the object to write to
   * @return the number of characters copied
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue

      standardClear();
    }

    @Override
    public boolean contains(Object object) {
      return standardContains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {
      return standardRemove(object);
    }

    @Override

      @Override
      public ImmutableMultiset<Object> create(List<?> keys) {
        ImmutableMultiset.Builder<Object> builder = ImmutableMultiset.builder();
        for (Object o : keys) {
          builder.add(o);
        }
        return builder.build();
      }
    },
    BUILDER_ADD_ALL_COLLECTION {
      @Override
      public ImmutableMultiset<Object> create(List<?> keys) {

				fmt.Printf("\t%s\n", s)
			}
		}
		os.Exit(0)
	}

	if object == "" {
		log.Fatalln("object name is mandatory")
	}

	if shards != 0 {
		fmt.Println("Erasure distribution for the object", hashOrder(prefix+object, shards))
	}
	fmt.Println("Erasure setNumber for the object", sipHashMod(prefix+object, setCount, id)+1)

     * Converts to {@link Short}.
     *
     * @param o
     *            The object to convert
     * @return The converted {@link Short}
     */
    public static Short toShort(final Object o) {
        return toShort(o, null);
    }

    /**
     * Converts to {@link Short}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string