servletContext.setSessionTrackingModes(
                    fessConfig.getSessionTrackingModesAsSet().stream().map(SessionTrackingMode::valueOf).collect(Collectors.toSet()));
        } catch (final Throwable t) {
            logger.warn("Failed to set SessionTrackingMode.", t);
        }

                        }
                    }
                } catch (final Exception e) {
                    logger.warn("Failed to read a suggest elevate word: {}", list, e);
                }
            }
            elevateWordBhv.refresh();
        } catch (final IOException e) {
            logger.warn("Failed to read a suggest elevate word.", e);
        }
    }

      // This set never contains null.  We need to explicitly check here
      // because some comparator might throw NPE (e.g. the natural ordering).
      return object != null && sortedDelegate.contains(object);
    } catch (ClassCastException e) {
      return false;
    }
  }

  @Override
  public boolean containsAll(Collection<?> targets) {
    for (Object target : targets) {
      if (target == null) {

    default String getName() {
        try (Writer writer = new StringWriter()) {
            Supplier<String> methodReference = this::toString;
            Supplier<String> lambda = () -> this.toString();
        } catch (IOException ignore) {
        }
        return "foo";
    }

    public OptionalEntity<UserInfo> getUserInfo(final String userCode) {
        if (StringUtil.isNotBlank(userCode)) {
            try {
                return OptionalEntity.of(userInfoCache.get(userCode));
            } catch (final ExecutionException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to access UserInfo cache.", e);
                }
            }
        }

      put(key, calculatedValue);
    } catch (RuntimeException e) {
      statsCounter.recordLoadException(ticker.read() - startTime);
      throw new UncheckedExecutionException(e);
    } catch (Exception e) {
      statsCounter.recordLoadException(ticker.read() - startTime);
      throw new ExecutionException(e);
    } catch (Error e) {
      statsCounter.recordLoadException(ticker.read() - startTime);

        multiExceptionListIterator.promoteToNext(targetReturnValueFromNext);
      }

      referenceReturnValue = method.execute(reference);
    } catch (PermittedMetaException e) {
      referenceException = e;
    } catch (UnknownElementException e) {
      throw new AssertionError(e);
    }

    if (referenceException == null) {
      if (targetException != null) {

            if (mimetype != null) {
                return mimetype;
            }
            return URLConnection.guessContentTypeFromName(path);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        } finally {
            CloseableUtil.close(is);
        }
    }

     */
    void init(String sessionId);

    /**
     * Check if a given url is a target.
     *
     * @param url URL
     * @return true if url is matched
     */
    boolean match(String url);

    /**
     * Add an url pattern as a target.
     *
     * @param urlPattern Regular expression that is crawled
     */
    void addInclude(String urlPattern);

    /**

	<script type="text/javascript" src="${fe:url('/js/suggestor.js')}"></script>
	<script type="text/javascript" src="${fe:url('/js/search.js')}"></script>
</body>
${fe:html(false)}