startTask();
    try {
      command.run();
    } finally {
      endTask();
    }
  }

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

  @Override
  public void shutdown() {
    synchronized (lock) {
      shutdown = true;
      if (runningTasks == 0) {
        lock.notifyAll();
      }
    }
  }

    }

    @Override
    public synchronized void insert(final ProtwordsItem item) {
        try (ProtwordsUpdater updater = new ProtwordsUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final ProtwordsItem item) {
        try (ProtwordsUpdater updater = new ProtwordsUpdater(item)) {

    }

    @Override
    public synchronized void insert(final KuromojiItem item) {
        try (KuromojiUpdater updater = new KuromojiUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final KuromojiItem item) {
        try (KuromojiUpdater updater = new KuromojiUpdater(item)) {

    }

    @Override
    public synchronized void insert(final StopwordsItem item) {
        try (StopwordsUpdater updater = new StopwordsUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final StopwordsItem item) {
        try (StopwordsUpdater updater = new StopwordsUpdater(item)) {

    }

    @Override
    public synchronized void insert(final StemmerOverrideItem item) {
        try (StemmerOverrideUpdater updater = new StemmerOverrideUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final StemmerOverrideItem item) {

    }

    /**
     * Starts a new process with the given session ID, command list, buffer size, and output callback.
     * This method is synchronized to ensure thread safety when managing processes.
     *
     * @param sessionId unique identifier for the process session
     * @param cmdList list of command and arguments to execute

    }

    @Override
    public synchronized void insert(final SynonymItem item) {
        try (SynonymUpdater updater = new SynonymUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final SynonymItem item) {
        try (SynonymUpdater updater = new SynonymUpdater(item)) {

     * @param size the maximum number of items to return
     * @return a PagingList containing the requested subset of mapping items
     */
    @Override
    public synchronized PagingList<CharMappingItem> selectList(final int offset, final int size) {
        if (mappingItemList == null) {
            reload(null);
        }

        if (offset >= mappingItemList.size() || offset < 0) {

     * This method delegates to {@link FileInputStream#mark(int)}.
     *
     * @param readlimit the maximum limit of bytes that can be read before the mark position becomes invalid
     */
    @Override
    public synchronized void mark(final int readlimit) {
        fileInputStream.mark(readlimit);
    }

    /**
     * Tests if this input stream supports the mark and reset methods.

         * @param groups Array of group names.
         */
        public synchronized void setGroups(final String[] groups) {
            this.groups = groups;
        }

        /**
         * Sets the user's role assignments.
         * @param roles Array of role names.
         */
        public synchronized void setRoles(final String[] roles) {
            this.roles = roles;
        }