}

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    public OptionalEntity<CrawlingInfo> getCrawlingInfo() {
        if (crawlingInfo != null) {
            final CrawlingInfoBhv crawlingInfoBhv = ComponentUtil.getComponent(CrawlingInfoBhv.class);
            crawlingInfo = crawlingInfoBhv.selectEntity(cb -> {

        Reporting reporting = model.getReporting();

        if (reporting != null) {
            for (ReportPlugin reportPlugin : reporting.getPlugins()) {
                Xpp3Dom parentDom = (Xpp3Dom) reportPlugin.getConfiguration();

                if (parentDom != null) {
                    for (ReportSet execution : reportPlugin.getReportSets()) {

            object = xpp3Dom.getDom();
        }
        if (object instanceof XmlNode xmlNode) {
            return new Xpp3DomNodePointer(xmlNode);
        }
        return null;
    }

    @Override
    public NodePointer createNodePointer(NodePointer parent, QName name, Object object) {
        if (object instanceof org.codehaus.plexus.util.xml.Xpp3Dom xpp3Dom) {

      }
      // It is possible for this to return null because nextEscapeIndex() may
      // (for performance reasons) yield some false positives but it must never
      // give false negatives.
      char[] escaped = escape(cp);
      int nextIndex = index + (Character.isSupplementaryCodePoint(cp) ? 2 : 1);
      if (escaped != null) {
        int charsSkipped = index - unescapedChunkStart;

            assertEquals(expiration, response.getExpiration());
        }

        @Test
        @DisplayName("Should handle null expiration")
        void testNullExpiration() {
            response.setExpiration(null);

            assertNull(response.getExpiration());
        }
    }

    @Nested
    @DisplayName("Async Handling Tests")
    class AsyncHandlingTests {

    assertThrows(NullPointerException.class, () -> builder.add((String) null));
  }

  public void testBuilderAddAllHandlesNullsCorrectly() {
    {
      ImmutableSortedMultiset.Builder<String> builder = ImmutableSortedMultiset.naturalOrder();
      assertThrows(NullPointerException.class, () -> builder.addAll((Collection<String>) null));
    }

    {

                .getTotalHits()
                .value() > 0);
    }

    public void test_poll_emptyQueueTx() {
        final String sessionId = "poll_session1";

        // Poll from empty queue should return null
        final OpenSearchUrlQueue result = urlQueueService.poll(sessionId);
        assertNull(result);
    }

    public void test_poll_singleItemTx() {
        final String sessionId = "poll_session2";

        UnaryOperator<String> callback = v -> {
            String r = request.getUserProperties().getProperty(v);
            if (r == null) {
                r = request.getSystemProperties().getProperty(v);
            }
            return r != null ? r : v;
        };
        return v -> interpolator.interpolate(v, callback);
    }

    static class SimpleSession extends DefaultSession {

      } catch (_: InvocationTargetException) {
        null
      }
  }

  companion object {
    val Tag = "OkHttp"

    val isSupported: Boolean = isAndroid && Build.VERSION.SDK_INT in 21 until 29

    fun buildIfSupported(): Platform? = if (isSupported) AndroidPlatform() else null
  }

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

Это означает, что у него **всегда будет какое‑то значение**, просто иногда это значение может быть `None` (или `null` в JSON).