.addEqualityGroup(wrapperFunction.apply(instance), wrapperFunction.apply(instance))
        .addEqualityGroup(wrapperFunction.apply(generator.newFreshProxy(interfaceType)))
        // TODO: add an overload to EqualsTester to print custom error message?
        .testEquals();
  }

  private static <T> void testToString(
      Class<T> interfaceType, Function<? super T, ? extends T> wrapperFunction) {

        .addEqualityGroup(wrapperFunction.apply(instance), wrapperFunction.apply(instance))
        .addEqualityGroup(wrapperFunction.apply(generator.newFreshProxy(interfaceType)))
        // TODO: add an overload to EqualsTester to print custom error message?
        .testEquals();
  }

  private static <T> void testToString(
      Class<T> interfaceType, Function<? super T, ? extends T> wrapperFunction) {

      final ArrayList<T> data = new ArrayList<>();

      @Override
      public int size() {
        return max(0, data.size() + delta);
      }

      @Override
      public T get(int index) {
        return data.get(index);
      }

      @Override
      public T set(int index, T element) {
        return data.set(index, element);
      }

      @Override

        private final HttpServletRequest request;

        private final FessConfig fessConfig;

        private int startPosition = -1;

        private int offset = -1;

        private int pageSize = -1;

        /**
         * Constructor for JsonRequestParams.
         * @param request The HTTP servlet request containing the search parameters

                    throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
                    return null;
                });
    }

    /**
     * Print a thread dump.
     * @param form The edit form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse threaddump(final EditForm form) {

            sink.writeUtf8("Numbers\n");
            sink.writeUtf8("-------\n");
            for (int i = 2; i <= 997; i++) {
              sink.writeUtf8(String.format(" * %s = %s\n", i, factor(i)));
            }
          }

          private String factor(int n) {
            for (int i = 2; i < n; i++) {
              int x = n / i;
              if (x * i == n) return factor(x) + " × " + i;
            }

     */
    CIFSContext withCredentials(Credentials creds);

    /**
     * Attempt to renew credentials after authentication failure
     *
     * @param locationHint URL or location hint for credential renewal
     * @param error the error that triggered renewal
     * @return whether new credentials are obtained
     */
    boolean renewCredentials(String locationHint, Throwable error);

  Hasher newHasher();

  /**
   * Begins a new hash code computation as {@link #newHasher()}, but provides a hint of the expected
   * size of the input (in bytes). This is only important for non-streaming hash functions (hash
   * functions that need to buffer their whole input before processing any of it).
   */
  Hasher newHasher(int expectedInputSize);

  /**

  Hasher newHasher();

  /**
   * Begins a new hash code computation as {@link #newHasher()}, but provides a hint of the expected
   * size of the input (in bytes). This is only important for non-streaming hash functions (hash
   * functions that need to buffer their whole input before processing any of it).
   */
  Hasher newHasher(int expectedInputSize);

  /**

    }
    final class Splitr extends MapWithIndexSpliterator<Spliterator.OfInt, R, Splitr>
        implements IntConsumer {
      int holder;

      Splitr(Spliterator.OfInt splitr, long index) {
        super(splitr, index);
      }

      @Override
      public void accept(int t) {
        this.holder = t;
      }

      @Override
      public boolean tryAdvance(Consumer<? super R> action) {