*
     * @return This instance itself
     */
    public CopyOptions excludeNull() {
        excludesNull = true;
        return this;
    }

    /**
     * Excludes properties with only whitespace from the operation.
     *
     * @return This instance itself
     */
    public CopyOptions excludeWhitespace() {

        return factory;
    }

    /**
     * Creates a new instance of {@link SAXParser} using the default configuration of {@link SAXParserFactory}.
     *
     * @return A new instance of {@link SAXParser}.
     */
    public static SAXParser newSAXParser() {
        return newSAXParser(newInstance());
    }

    /**
     * Creates a new instance of {@link SAXParser} using the specified {@link SAXParserFactory}.
     *

    @Test
    public void test_constructor() {
        assertNotNull(target, "Constructor should create instance");
        assertTrue(target instanceof SystemMonitorTarget, "Instance should be of correct type");
        assertTrue(target instanceof MonitorTarget, "Instance should be a MonitorTarget");
        assertTrue(target instanceof TimeoutTarget, "Instance should be a TimeoutTarget");
    }

    @Test

    field = v2.ModelField(name="items", field_info=field_info)
    result = v2.serialize_sequence_value(field=field, value=["a", "b", "c"])
    assert result == ["a", "b", "c"]
    assert isinstance(result, list)


def test_serialize_sequence_value_with_optional_list_pipe_union():
    """Test that serialize_sequence_value handles optional lists correctly (with new syntax)."""
    from fastapi._compat import v2

    }

    /**
     * Gets the Fess configuration instance.
     *
     * @return the Fess configuration
     */
    @Override
    public FessConfig getFessConfig() {
        return fessConfig;
    }

    /**
     * Gets the logger instance for this transformer.
     *
     * @return the logger instance
     */
    @Override
    public Logger getLogger() {
        return logger;

     *
     * @param proxy the proxy
     * @return this CurlRequest instance
     */
    public CurlRequest proxy(final Proxy proxy) {
        this.proxy = proxy;
        return this;
    }

    /**
     * Sets the character encoding for the request.
     *
     * @param encoding the encoding
     * @return this CurlRequest instance
     * @throws CurlException if the method is called after the param method

    protected DocumentBuilderFactoryUtil() {
    }

    /**
     * Returns a new instance of {@link DocumentBuilderFactory}.
     *
     * @return A new instance of {@link DocumentBuilderFactory}.
     */
    public static DocumentBuilderFactory newInstance() {
        return newInstance(false);
    }

    /**
     * Returns a new instance of {@link DocumentBuilderFactory}.
     *
     * @param external

          .put(ImmutableClassToInstanceMap.class, ImmutableClassToInstanceMap.builder().build())
          .put(Comparable.class, ByToString.INSTANCE)
          .put(Comparator.class, AlwaysEqual.INSTANCE)
          .put(Ordering.class, AlwaysEqual.INSTANCE)
          .put(Range.class, Range.all())
          .put(MapDifference.class, Maps.difference(ImmutableMap.of(), ImmutableMap.of()))
          .put(

        }
        return instances;
    }

    /**
     * Checks whether the specified instance is currently active.
     *
     * @param targetInstanceId the instance ID to check.
     * @return {@code true} if the instance is active.
     */
    public boolean isInstanceActive(final String targetInstanceId) {

  private Atomics() {}

  /**
   * Creates an {@code AtomicReference} instance with no initial value.
   *
   * @return a new {@code AtomicReference} with no initial value
   */
  public static <V> AtomicReference<@Nullable V> newReference() {
    return new AtomicReference<>();
  }

  /**
   * Creates an {@code AtomicReference} instance with the given initial value.
   *
   * @param initialValue the initial value