@Override
    public boolean isAvailable() {
        if (available != null) {
            return available;
        }
        if (generatorList != null && !generatorList.isEmpty()) {
            String path = System.getenv("PATH");
            if (path == null) {
                path = System.getenv("Path");
            }
            if (path == null) {
                path = System.getenv("path");
            }

     * @return 削除されたエントリ。キーに対応するエントリがなかった場合は{@literal null}
     */
    protected Entry<K, V> removeMap(final Object key) {
        int hashCode = 0;
        int index = 0;

        if (key != null) {
            hashCode = key.hashCode();
            index = (hashCode & 0x7FFFFFFF) % mapTable.length;
            for (Entry<K, V> e = mapTable[index], prev = null; e != null; prev = e, e = e.next) {

        super(
            domain != null ? domain : tc.getConfig().getDefaultDomain(),
            username != null ? username : ( tc.getConfig().getDefaultUsername() != null ? tc.getConfig().getDefaultUsername() : "GUEST" ),
            password != null ? password : ( tc.getConfig().getDefaultPassword() != null ? tc.getConfig().getDefaultPassword() : "" ),
            (AuthenticationType) null);
        this.context = tc;
    }

    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        if (in == null) {
            throw new CrawlerSystemException("The inputstream is null.");
        }

        final String password = getPassword(params);
        try (PDDocument document = PDDocument.load(in, password == null ? null : password)) {
            final StringWriter writer = new StringWriter();

            if (t instanceof AbstractMojoExecutionException) {
                longMessage = ((AbstractMojoExecutionException) t).getLongMessage();
            } else if (t instanceof MojoException) {
                longMessage = ((MojoException) t).getLongMessage();
            }

            if (longMessage != null && !longMessage.isEmpty()) {

    outer:
    while (true) {
      AtomicLong atomic = map.get(key);
      if (atomic == null) {
        atomic = map.putIfAbsent(key, new AtomicLong(delta));
        if (atomic == null) {
          return delta;
        }
        // atomic is now non-null; fall through
      }

      while (true) {
        long oldValue = atomic.get();
        if (oldValue == 0L) {

    public void crawl(final String sessionId, final List<String> webConfigIdList, final List<String> fileConfigIdList) {
        final boolean runAll = webConfigIdList == null && fileConfigIdList == null;
        final List<WebConfig> webConfigList;
        if (runAll || webConfigIdList != null) {
            webConfigList = ComponentUtil.getCrawlingConfigHelper().getWebConfigListByIds(webConfigIdList);
        } else {

   * ParametricNullness parametric nullness}. Sometimes, code may receive a null {@code T} but store
   * a "null sentinel" to take its place. When the time comes to convert it back to a {@code T} to
   * return to a caller, the code needs to a way to return {@code null} from a method that returns
   * "plain {@code T}." This API provides that.
   */
  @SuppressWarnings({"nullness", "TypeParameterUnusedInFormals", "ReturnMissingNullable"})

                    e.getLocation().getColumnNumber(),
                    e);
        }
    }

    private boolean isStrict(Map<String, ?> options) {
        Object value = (options != null) ? options.get(IS_STRICT) : null;
        return value == null || Boolean.parseBoolean(value.toString());
    }

        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        suggestWord = null;
        boost = null;
        createdBy = null;
        createdTime = null;
        versionNo = null;

    }

    protected int getDefaultCurrentPageNumber() {
        return DEFAULT_CURRENT_PAGE_NUMBER;
    }