//                                                                           =========
    private static final RoleTypeDbm _instance = new RoleTypeDbm();

    private RoleTypeDbm() {
    }

    public static RoleTypeDbm getInstance() {
        return _instance;
    }

    // ===================================================================================

/**
 * Unit test for {@link Helpers}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
public class HelpersTest extends TestCase {
  public void testNullsBeforeB() {
    testComparator(NullsBeforeB.INSTANCE, "a", "azzzzzz", null, "b", "c");
  }

  public void testIsEmpty_iterable() {
    List<Object> list = new ArrayList<>();
    assertEmpty(list);
    assertEmpty(() -> emptyIterator());

    list.add("a");

/**
 * Unit test for {@link Helpers}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
public class HelpersTest extends TestCase {
  public void testNullsBeforeB() {
    testComparator(NullsBeforeB.INSTANCE, "a", "azzzzzz", null, "b", "c");
  }

  public void testIsEmpty_iterable() {
    List<Object> list = new ArrayList<>();
    assertEmpty(list);
    assertEmpty(() -> emptyIterator());

    list.add("a");

 * and RoCE (RDMA over Converged Ethernet) networks.
 */
public class DisniRdmaProvider implements RdmaProvider {

    /**
     * Creates a new DiSNI RDMA provider instance
     */
    public DisniRdmaProvider() {
        // Default constructor
    }

    private static final Logger log = LoggerFactory.getLogger(DisniRdmaProvider.class);

    assertThrows(
        NullPointerException.class,
        () -> {
          Object unused = getSubjectGenerator().create(array);
        });
  }

  /**
   * Returns the {@link Method} instance for {@link #testCreateWithNull_unsupported()} so that tests
   * can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="https://bugs.openjdk.org/browse/JDK-5045147">JDK-5045147</a> is fixed.

En realidad, `Query`, `Path` y otros que verás a continuación crean objetos de subclases de una clase común `Param`, que es a su vez una subclase de la clase `FieldInfo` de Pydantic.

Y `Field` de Pydantic también regresa una instance de `FieldInfo`.

`Body` también devuelve objetos de una subclase de `FieldInfo` directamente. Y hay otros que verás más adelante que son subclases de la clase `Body`.

    out.write(bytes, off, len);
  }

  /**
   * Returns the {@link HashCode} based on the data written to this stream. The result is
   * unspecified if this method is called more than once on the same instance.
   */
  public HashCode hash() {
    return hasher.hash();
  }

  // Overriding close() because FilterOutputStream's close() method pre-JDK8 has bad behavior:

    private final List<Sitemap> sitemapList = new ArrayList<>();

    /** The type of this sitemap set (URLSET or INDEX). */
    private String type = URLSET;

    /**
     * Creates a new SitemapSet instance with default type URLSET.
     */
    public SitemapSet() {
        // Default constructor
    }

    /**
     * Adds a sitemap to this set.
     * @param sitemap the sitemap to add
     */

        assertNotNull(response.getResults());
        assertEquals(2, response.getResults().length);
        assertTrue(response.getResults()[0] instanceof FileBothDirectoryInfo);
        assertTrue(response.getResults()[1] instanceof FileBothDirectoryInfo);
    }

    @Test
    @DisplayName("Test readBytesWireFormat with zero buffer length returns one empty result")

import org.opensearch.core.xcontent.XContentBuilder;

/**
 * OpenSearchUrlFilter is an entity for URL filters in OpenSearch.
 */
public class OpenSearchUrlFilter implements ToXContent {

    /**
     * Creates a new instance of OpenSearchUrlFilter.
     */
    public OpenSearchUrlFilter() {
        // NOP
    }

    /**
     * Field name for session ID.
     */
    public static final String SESSION_ID = "sessionId";