import okhttp3.Request;
import okhttp3.Response;
import okhttp3.WebSocketListener;
import okio.ByteString;

/**
 * API access to the <a href="https://api.slack.com/apps">Slack API</a> as an application. One
 * instance of this class may operate without a user, or on behalf of many users. Use the Slack API
 * dashboard to create a client ID and secret for this application.
 *

  // enum singleton pattern
  private enum TrimStringFunction implements Function<String, String> {
    INSTANCE;

    @Override
    public String apply(String string) {
      return whitespace().trimFrom(string);
    }
  }

  public void testCompose() {
    Function<String, String> trim = TrimStringFunction.INSTANCE;
    Predicate<String> equalsFoo = Predicates.equalTo("Foo");

    class ConstructorTests {

        @Test
        @DisplayName("Default constructor should create instance with default values")
        void testDefaultConstructor() {
            // When
            DcerpcBind defaultBind = new DcerpcBind();

            // Then
            assertNotNull(defaultBind, "Default constructor should create instance");
            assertEquals(0, defaultBind.getOpnum(), "Default opnum should be 0");
        }

    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
     */

    /**
     * Prefix length for generated IDs.
     */
    protected int idPrefixLength = 445;

    /**
     * Returns the FesenClient instance, connecting if not already connected.
     * @return The FesenClient instance.
     */
    protected FesenClient getClient() {
        if (!fesenClient.connected()) {
            synchronized (fesenClient) {
                if (!fesenClient.connected()) {

/**
 * 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");