* @return {@link Locale}
     */
    public static Locale getLocale(final String localeStr) {
        // TODO replace with Fess
        Locale locale = LocaleUtil.getDefault();
        if (localeStr != null) {
            final int index = localeStr.indexOf('_');
            if (index < 0) {
                locale = new Locale(localeStr);
            } else {
                final String language = localeStr.substring(0, index);

    } else if (code in 1004..1006 || code in 1015..2999) {
      "Code $code is reserved and may not be used."
    } else {
      null
    }

  fun validateCloseCode(code: Int) {
    val message = closeCodeExceptionMessage(code)
    require(message == null) { message!! }
  }

  fun acceptHeader(key: String): String = (key + ACCEPT_MAGIC).encodeUtf8().sha1().base64()

          public @Nullable Void call() throws Exception {
            // adds two nanoseconds to the ticker
            ticker.advance(1L);
            Thread.sleep(10);
            ticker.advance(1L);
            return null;
          }
        });

    assertEquals(numberOfThreads * 2, ticker.read());
  }

  @GwtIncompatible // concurrency

  public void testConcurrentAutoIncrementStep() throws Exception {

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

Esto significa que **siempre tendrá un valor**, solo que a veces el valor podría ser `None` (o `null` en JSON).

        this.requestSemaphore = backpressureEnabled ? new Semaphore(maxConcurrentRequests, true) : null;

        // Initialize scheduler for dynamic threshold adjustment
        this.scheduler =
                dynamicThresholdEnabled ? Executors.newScheduledThreadPool(1, r -> new Thread(r, "SmbCircuitBreaker-" + name)) : null;

        // Start dynamic threshold adjustment if enabled
        if (dynamicThresholdEnabled) {

                    throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id));
                    return null;
                }))
                .status(ApiResult.Status.OK)
                .result());
    }

    /**
     * Creates a new scheduler setting.
     *

    Function<N, V> successorNodeToValueFn =
        (N successorNode) ->
            // requireNonNull is safe because the endpoint pair comes from the graph.
            requireNonNull(graph.edgeValueOrDefault(node, successorNode, null));
    return graph.isDirected()
        ? DirectedGraphConnections.ofImmutable(
            node, graph.incidentEdges(node), successorNodeToValueFn)
        : UndirectedGraphConnections.ofImmutable(

    assertThrows(UnsupportedOperationException.class, () -> navigableSet.pollFirst());
  }

  @CollectionSize.Require(SEVERAL)
  public void testLowerHole() {
    resetWithHole();
    assertEquals(null, navigableSet.lower(a));
    assertEquals(a, navigableSet.lower(b));
    assertEquals(a, navigableSet.lower(c));
  }

  @CollectionSize.Require(SEVERAL)
  public void testFloorHole() {
    resetWithHole();

        boolean isAsync = request.isResponseAsync();

        // Then
        assertFalse(isAsync, "Cancel requests should not expect async responses");
    }

    @Test
    @DisplayName("Test getNext returns null")
    void testGetNext() {
        // Given
        Smb2CancelRequest request = new Smb2CancelRequest(mockConfig, 1L, 0L);

        // When
        ServerMessageBlock2Request<?> next = request.getNext();

    public synchronized void close() throws SmbException {
        try {
            if (this.handle != null) {
                try {
                    this.handle.close();
                } catch (final CIFSException e) {
                    throw SmbException.wrap(e);
                }
                this.handle = null;
            }
        } finally {
            this.file.clearAttributeCache();