* @return True if the password was successfully changed in all chains, false otherwise.
     */
    public boolean changePassword(final String username, final String password) {
        return chains().get(stream -> stream.allMatch(c -> c.changePassword(username, password)));
    }

    /**
     * Deletes a user from all authentication chains.
     * @param user The user to delete.
     */
    public void delete(final User user) {

     */
    protected boolean isEmptyArray(final String[] values) {
        if (values == null || values.length == 0) {
            return true;
        }
        return stream(values).get(stream -> stream.allMatch(StringUtil::isBlank));
    }

    /**
     * Simplifies the array.
     *
     * @param values The array.
     * @return The simplified array.
     */

                    }
                }
                if (logger.isDebugEnabled()) {
                    logger.debug("generator path: {}", s);
                }
                return s;
            }).allMatch(s -> {
                final boolean found = new File(s).isFile();
                if (found && logger.isDebugEnabled()) {
                    logger.debug("{} is found.", s);
                }

        assertFalse(result);
        assertEquals(1, chain1.changePasswordCallCount);
        assertEquals(1, chain2.changePasswordCallCount);
        // allMatch may short-circuit, so chain3 might not be called
        assertTrue(chain3.changePasswordCallCount <= 1);
    }

    // Test delete with no chains
    public void test_delete_noChains() {

   * fluent iterable is empty, {@code true} is returned.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#allMatch} (same).
   */
  public final boolean allMatch(Predicate<? super E> predicate) {
    return Iterables.all(getDelegate(), predicate);
  }

  /**

   * fluent iterable is empty, {@code true} is returned.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#allMatch} (same).
   */
  public final boolean allMatch(Predicate<? super E> predicate) {
    return Iterables.all(getDelegate(), predicate);
  }

  /**

  /**
   * Returns {@code true} if every element in {@code iterable} satisfies the predicate. If {@code
   * iterable} is empty, {@code true} is returned.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#allMatch}.
   */
  public static <T extends @Nullable Object> boolean all(
      Iterable<T> iterable, Predicate<? super T> predicate) {
    return Iterators.all(iterable.iterator(), predicate);
  }

  /**

            propMap.put(SUGGEST_SEARCH_LOG_PERMISSIONS, validPermissionList);
        }
        final List<String> list = validPermissionList;
        return stream(permissions).get(stream -> stream.allMatch(v -> list.contains(v)));
    }

    String getRoleSearchUserPrefix();

    String getRoleSearchGuestPermissions();

    default List<String> getSearchGuestRoleList() {

  /**
   * Returns {@code true} if every element in {@code iterable} satisfies the predicate. If {@code
   * iterable} is empty, {@code true} is returned.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#allMatch}.
   */
  public static <T extends @Nullable Object> boolean all(
      Iterable<T> iterable, Predicate<? super T> predicate) {
    return Iterators.all(iterable.iterator(), predicate);
  }

  /**