FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

    Thread waiter =
        new Thread() {
          @Override
          public void run() {
            service.awaitTerminated();
          }
        };
    waiter.start();
    service.startAsync().awaitRunning();
    assertEquals(State.RUNNING, service.state());
    service.stopAsync();
    waiter.join(LONG_TIMEOUT_MILLIS); // ensure that the await in the other thread is triggered

    Thread waiter =
        new Thread() {
          @Override
          public void run() {
            service.awaitTerminated();
          }
        };
    waiter.start();
    service.startAsync().awaitRunning();
    assertEquals(State.RUNNING, service.state());
    service.stopAsync();
    waiter.join(LONG_TIMEOUT_MILLIS); // ensure that the await in the other thread is triggered

    /**
     * Attempts to acquire a distributed lock for the specified operation with optional data.
     *
     * @param operationName the operation name used as the lock document ID.
     * @param data optional data to store with the operation document.
     * @return {@code true} if the lock was acquired.
     */
    public boolean tryStartOperation(final String operationName, final String data) {

    protected long schedulerTime;

    @Override
    public void schedule(final LaCron cron) {
        schedulerTime = systemHelper.getCurrentTimeAsLong();
        scheduledJobService.start(cron);

        final String myName = fessConfig.getSchedulerTargetName();
        if (StringUtil.isNotBlank(myName)) {
            ComponentUtil.getComponent(JobLogBhv.class).queryDelete(cb -> {

  private fun newEmptyKeyStore(keyStoreType: String?): KeyStore =
    KeyStore.getInstance(keyStoreType ?: KeyStore.getDefaultType()).apply {
      val inputStream: InputStream? = null // By convention, 'null' creates an empty key store.
      load(inputStream, password)
    }

        validate(form, messages -> {}, this::asEditHtml);
        verifyToken(this::asEditHtml);
        createStopwordsItem(form, this::asEditHtml).ifPresent(entity -> {
            stopwordsService.store(form.dictId, entity);
            saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
        }).orElse(() -> throwValidationError(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL), this::asEditHtml));

     * Includes system properties and job runtime information if available.
     *
     * @param cmdList the command list (used as comment in properties file)
     * @param propFile the file to store properties to
     * @throws IORuntimeException if an I/O error occurs
     */
    protected void createSystemProperties(final List<String> cmdList, final File propFile) {

        predecessorCount <= adjacentNodeValues.size()
            && successorCount <= adjacentNodeValues.size());
  }

  static <N, V> DirectedGraphConnections<N, V> of(ElementOrder<N> incidentEdgeOrder) {
    // We store predecessors and successors in the same map, so double the initial capacity.
    int initialCapacity = INNER_CAPACITY * 2;

    List<NodeConnection<N>> orderedNodeConnections;
    switch (incidentEdgeOrder.type()) {

  @Override
  @Nullable V getIfCached(@Nullable Object key) {
    V value = super.getIfCached(key);
    if (value != null) {
      return value;
    }

    // Store a local reference to the cache entry. If the backing map is immutable, this,
    // in combination with immutable cache entries, will ensure a thread-safe cache.
    CacheEntry<K, V> entry;