* @return true if the crawler is running, false otherwise
     */
    public boolean isCrawlerRunning() {
        return crawlerRunning;
    }

    /**
     * Sets the crawler running status.
     *
     * @param crawlerRunning true to indicate the crawler is running, false otherwise
     */
    public void setCrawlerRunning(final boolean crawlerRunning) {
        this.crawlerRunning = crawlerRunning;
    }

    assertTrue(service.shutDownCalled);
  }

  private class WaitOnRunService extends AbstractExecutionThreadService {
    private boolean startUpCalled = false;
    private boolean runCalled = false;
    private boolean shutDownCalled = false;
    private State expectedShutdownState = State.STOPPING;

    @Override
    protected void startUp() {
      assertFalse(startUpCalled);

    /**
     * Is the property true?
     * @param propertyKey The key of the property which is boolean type. (NotNull)
     * @return The determination, true or false. (if not found, exception)
     * @throws ConfigPropertyNotFoundException When the property is not found.
     */
    boolean is(String propertyKey);

    /**
     * Get the value for the key 'lasta_di.smart.deploy.mode'. <br>

     * @param autoExpandReplicas the auto expand replicas setting for the new index
     * @return true if the reindex operation started successfully, false otherwise
     */
    protected boolean startReindex(final boolean replaceAliases, final boolean resetDictionaries, final String numberOfShards,
            final String autoExpandReplicas) {
        final String docIndex = "fess";

    /**
     * Whether to exclude properties with null values from the operation.
     */
    protected boolean excludesNull = false;

    /**
     * Whether to exclude strings that consist only of whitespace from the operation.
     */
    protected boolean excludesWhitespace = false;

    /**
     * The prefix.
     */
    protected String prefix;

    /**

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override
    public String buildDisplayString(String name, boolean column, boolean relation) { // #pending
        return toString();
    }

    // ===================================================================================

            return "Lax";
        }

        @Override
        public boolean isSearchLog() {
            return true;
        }

        @Override
        public boolean isUserFavorite() {
            return true;
        }

        @Override
        public boolean isBrowserLocaleForSearchUsed() {
            return true;
        }

        @Override

            try {
                final XPathEvaluationResult<?> xObj = getXPathAPI().eval(document, path);
                switch (xObj.type()) {
                case BOOLEAN:
                    final Boolean b = (Boolean) xObj.value();
                    buf.append(getResultDataBody(entry.getKey(), b.toString()));
                    break;
                case NUMBER:

    }
    return comparator;
  }

  @Override
  public boolean containsKey(Object key) {
    try {
      return delegate.containsKey(checkValid(key));
    } catch (NullPointerException | ClassCastException e) {
      return false;
    }
  }

  @Override
  public boolean containsValue(Object value) {
    return delegate.containsValue(value);
  }

  @Override

   */
  @GuardedBy("lock")
  private int runningTasks = 0;

  @GuardedBy("lock")
  private boolean shutdown = false;

  @Override
  public void execute(Runnable command) {
    startTask();
    try {
      command.run();
    } finally {
      endTask();
    }
  }

  @Override
  public boolean isShutdown() {
    synchronized (lock) {
      return shutdown;
    }
  }

  @Override