} finally {
            // remove crawlerContext from thread
            CrawlingParameterUtil.setCrawlerContext(null);
            CrawlingParameterUtil.setUrlQueueService(null);
            CrawlingParameterUtil.setDataService(null);
        }
        log(logHelper, LogType.FINISHED_THREAD, crawlerContext);
    }

    /**
     * Adds sitemaps from robots.txt to the crawling queue.

                context.installationSettingsPath != null ? context.installationSettingsPath.toFile() : null);
        request.setProjectSettingsFile(
                context.projectSettingsPath != null ? context.projectSettingsPath.toFile() : null);
        request.setUserSettingsFile(context.userSettingsPath != null ? context.userSettingsPath.toFile() : null);

        request.setTopDirectory(context.invokerRequest.topDirectory());

   */
  @Nullable V getLiveValue(ReferenceEntry<K, V> entry, long now) {
    if (entry.getKey() == null) {
      return null;
    }
    V value = entry.getValueReference().get();
    if (value == null) {
      return null;
    }

    if (isExpired(entry, now)) {
      return null;
    }
    return value;
  }

  // expiration

    protected ResponseData processRequest(final String uri, final boolean includeContent) {
        if (ftpAuthenticationHolder == null) {
            init();
        }

        // start
        AccessTimeoutTarget accessTimeoutTarget = null;
        TimeoutTask accessTimeoutTask = null;
        if (accessTimeout != null) {
            accessTimeoutTarget = new AccessTimeoutTarget(Thread.currentThread());

    Iterator<Entry<E>> entryIterator = entryIterator();
    return entryIterator.hasNext() ? entryIterator.next() : null;
  }

  @Override
  public @Nullable Entry<E> lastEntry() {
    Iterator<Entry<E>> entryIterator = descendingEntryIterator();
    return entryIterator.hasNext() ? entryIterator.next() : null;
  }

  @Override
  public @Nullable Entry<E> pollFirstEntry() {

        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .coordinates(requireNonNull(coordinates, "coordinates cannot be null"))
                .build();
    }

    @Nonnull
    static ArtifactResolverRequest build(
            @Nonnull Session session,

    }

    @Test
    public void test_changePassword_withBothNull() {
        // Test password change with both null
        testLdapManager.changePasswordResult = false;
        testFessConfig.ldapAdminSyncPassword = false;

        boolean result = ldapChain.changePassword(null, null);

        assertTrue(result);
        assertNull(testLdapManager.changePasswordUsername);

    try {
      assertNull(
          "remove(null) should return null or throw NullPointerException", getMap().remove(null));
    } catch (NullPointerException tolerated) {
    }
    expectUnchanged();
  }

  @MapFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_KEY_QUERIES})
  public void testRemove_nullSupportedMissing() {
    assertNull("remove(null) should return null", getMap().remove(null));
    expectUnchanged();
  }

            URLStreamHandler handler = (URLStreamHandler) PROTOCOL_HANDLERS.get(protocol);
            if (handler != null) {
                return handler;
            }
            if (factory != null) {
                handler = factory.createURLStreamHandler(protocol);
            }
            if (handler == null) {
                final String path = System.getProperty(HANDLER_PKGS_PROPERTY);

        public URLStreamHandler getUrlHandler() {
            return null; // Not relevant for AbstractCIFSContext tests
        }

        @Override
        public SidResolver getSIDResolver() {
            return null; // Not relevant for AbstractCIFSContext tests
        }

        @Override
        public DfsResolver getDfs() {
            return null; // Not relevant for AbstractCIFSContext tests
        }