*            {@link Object}クラスも反復する場合は {@literal true}
     */
    public ClassIterator(final Class<?> clazz, final boolean includeObject) {
        assertArgumentNotNull("clazz", clazz);
        assertArgument("clazz", !clazz.isInterface(), MessageFormatter.getSimpleMessage("ECL0103", clazz));

        this.clazz = clazz;
        this.includeObject = includeObject;
    }

    @Override
    public boolean hasNext() {

                .distinct()
                .forEach(key -> {
                    Class<?> clazz = key.getRawType();
                    Class<Object> itf = (clazz.isInterface()
                            ? null
                            : (Class<Object>) (clazz.getInterfaces().length > 0 ? clazz.getInterfaces()[0] : clazz));
                    if (itf != null) {

  /**
   * Returns the package name of {@code clazz} according to the Java Language Specification (section
   * 6.7). Unlike {@link Class#getPackage}, this method only parses the class name, without
   * attempting to define the {@link Package} and hence load files.
   */
  public static String getPackageName(Class<?> clazz) {
    return getPackageName(clazz.getName());
  }

  /**

            }

            return convertObj(((String[]) value)[0], clazz);
        }

        return convertObj(value, clazz);
    }

    @SuppressWarnings("unchecked")
    private static <T> T convertObj(final Object value, final Class<T> clazz) {
        if (value == null) {
            return null;
        }

        if (clazz.isAssignableFrom(String.class)) {
            return (T) value.toString();
        }

     * {@link Logger}を返します。
     *
     * @param clazz
     *            ロガーのカテゴリとなるクラス。{@literal null}であってはいけません
     * @return {@link Logger}
     */
    public static synchronized Logger getLogger(final Class<?> clazz) {
        assertArgumentNotNull("clazz", clazz);

        if (!initialized) {
            initialize();
        }
        Logger logger = loggers.get(clazz);
        if (logger == null) {

     */
    static <T> Key<T> key(Class<T> clazz) {
        return new Key<>(clazz, clazz);
    }

    /**
     * Create a key using the given class and id.
     */
    static <T> Key<T> key(Class<T> clazz, Object id) {
        return new Key<>(clazz, id);
    }

    /**
     * Key used to query the session data

    public String prompt(String message, List<String> possibleValues, String defaultReply) throws PrompterException {
        try {
            Class<?> clazz = container.getContainerRealm().loadClass(PROMPTER_CLASS);
            Object instance = container.lookup(clazz);
            Method method = clazz.getMethod("prompt", String.class, List.class, String.class);
            return (String) method.invoke(instance, message, possibleValues, defaultReply);

            throw new IllegalStateException();
        }
        values.remove(0);
    }

    public <T> void seed(Class<T> clazz, Provider<T> value) {
        getScopeState().seed(clazz, value);
    }

    public <T> void seed(Class<T> clazz, final T value) {
        seed(clazz, (Provider<T>) () -> value);
    }

    public <T> Provider<T> scope(final Key<T> key, final Provider<T> unscoped) {

      implements Predicate<T>, Serializable {
    private final Class<?> clazz;

    private InstanceOfPredicate(Class<?> clazz) {
      this.clazz = checkNotNull(clazz);
    }

    @Override
    public boolean apply(@ParametricNullness T o) {
      return clazz.isInstance(o);
    }

    @Override
    public int hashCode() {
      return clazz.hashCode();
    }

    @Override

     *
     * @param clazz
     *            クラス。{@literal null}であってはいけません
     * @return クラス名
     */
    public static String getSimpleClassName(final Class<?> clazz) {
        assertArgumentNotNull("clazz", clazz);

        if (clazz.isArray()) {
            return getSimpleClassName(clazz.getComponentType()) + "[]";
        }
        return clazz.getName();
    }

    /**