public int remainingCapacity() {
    return maxSize - size();
  }

  @Override
  protected Queue<E> delegate() {
    return delegate;
  }

  /**
   * Adds the given element to this queue. If the queue is currently full, the element at the head
   * of the queue is evicted to make room.
   *
   * @return {@code true} always
   */
  @Override
  @CanIgnoreReturnValue
  public boolean offer(E e) {
    return add(e);

         *
         * @return the identifier
         */
        @Override
        public String id() {
            return id;
        }

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

        @Override
        public boolean equals(Object obj) {

  @Override
  public int count(@Nullable Object element) {
    int index = elementSet.indexOf(element);
    return (index >= 0) ? getCount(index) : 0;
  }

  @Override
  public int size() {
    long size = cumulativeCounts[offset + length] - cumulativeCounts[offset];
    return Ints.saturatedCast(size);
  }

  @Override
  public ImmutableSortedSet<E> elementSet() {
    return elementSet;
  }

  @Override

    }
    return null;
  }

  @Override
  public Annotation[] getAnnotations() {
    return getDeclaredAnnotations();
  }

  /**
   * @since 18.0
   */
  @Override
  public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationType) {
    return getDeclaredAnnotationsByType(annotationType);
  }

  /**
   * @since 18.0
   */
  @Override
  public Annotation[] getDeclaredAnnotations() {

import org.codelibs.fess.unit.UnitFessTestCase;

public class ThemeHelperTest extends UnitFessTestCase {

    private ThemeHelper themeHelper;
    private Path tempDir;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        themeHelper = new ThemeHelper();
        tempDir = Files.createTempDirectory("theme-test");

  }

  @Override
  public E get(int index) {
    Preconditions.checkElementIndex(index, 1);
    return element;
  }

  @Override
  public UnmodifiableIterator<E> iterator() {
    return singletonIterator(element);
  }

  @Override
  public Spliterator<E> spliterator() {
    return singleton(element).spliterator();
  }

  @Override
  public int size() {
    return 1;
  }

     */
    @Override
    protected void removeRange(int fromIndex, int toIndex) {
      fromList.subList(fromIndex, toIndex).clear();
    }

    @Override
    public int size() {
      return fromList.size();
    }

    @Override
    public boolean isEmpty() {
      return fromList.isEmpty();
    }

    @Override
    public ListIterator<T> listIterator(int index) {

        public int getPageSize() {
            throw new UnsupportedOperationException();
        }

        @Override
        public String[] getExtraQueries() {
            throw new UnsupportedOperationException();
        }

        @Override
        public Object getAttribute(final String name) {
            throw new UnsupportedOperationException();
        }

        @Override

    private static final String KEY_PROPERTY = "name";

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {

        map = new CaseInsensitiveMap<>(initialCapacity);
    }

    @Override
    public Iterator<String> iterator() {
        return map.keySet().iterator();
    }

    @Override
    public int size() {
        return map.size();
    }

    @Override
    public boolean isEmpty() {
        return map.isEmpty();
    }

    @Override
    public boolean contains(final Object o) {