import org.opensearch.index.query.QueryBuilder;
import org.opensearch.search.SearchHit;
import org.opensearch.transport.client.Client;

/**
 * Utility class for suggest feature.
 */
public final class SuggestUtil {
    private static final int MAX_QUERY_TERM_NUM = 5;
    private static final int MAX_QUERY_TERM_LENGTH = 48;

    private static final Base64.Encoder encoder = Base64.getEncoder();

    dns.assertRequests(PROXY_A_HOST)
    assertThat(selection1.hasNext()).isFalse()
    assertThat(routeSelector.hasNext()).isTrue()
    dns.clear(PROXY_B_HOST)
    assertFailsWith<UnknownHostException> {
      routeSelector.next()
    }
    dns.assertRequests(PROXY_B_HOST)
    assertThat(routeSelector.hasNext()).isTrue()
    dns[PROXY_A_HOST] = dns.allocate(1)

    assertThrows(IOException.class, () -> failSource.copyTo(new TestCharSink()));
    assertTrue(failSource.wasStreamClosed());
  }

  public void testClosesOnErrors_copyingToWriterThatThrows() {
    TestCharSource okSource = new TestCharSource(STRING);
    assertThrows(IOException.class, () -> okSource.copyTo(new TestWriter(WRITE_THROWS)));
    assertTrue(okSource.wasStreamClosed());

            return getJobTemplateTitleData();
        }
        return "None";
    }

    String getSchedulerJobClass();

    default Class<? extends LaJob> getSchedulerJobClassAsClass() {
        try {
            return (Class<? extends LaJob>) Class.forName(getSchedulerJobClass());
        } catch (final ClassNotFoundException e) {
            throw new ClassNotFoundRuntimeException(e);
        }
    }

		if doneCh == nil {
			return
		}

		// Indicate we are ready to write.
		doneCh <- err

		// Wait for channel to be closed so we don't race on writes.
		<-doneCh

		// Clear so we can be called multiple times without crashing.
		doneCh = nil
	}, &closeNotifier{rc: r.Body, done: bodyDoneCh}
}

// keepHTTPResponseAlive can be used to avoid timeouts with long storage

 *
 * @author mbechler
 */
public class NameServiceClientImpl implements Runnable, NameServiceClient {

    private static final int NAME_SERVICE_UDP_PORT = 137;

    static final byte[] UNKNOWN_MAC_ADDRESS = { (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00 };

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

    private final Object LOCK = new Object();

 *       worse, and possibly better, than creating a mutable collection and copying it.
 *   <li>Implementations generally do not cache hash codes. If your element or key type has a slow
 *       {@code hashCode} implementation, it should cache it itself.
 * </ul>
 *
 * <h4>Example usage</h4>
 *
 * {@snippet :
 * class Foo {

        // Clean up old windows periodically
        if (currentCount == 1) {
            cleanupOldRateLimitCounters(currentWindow);
        }

        return currentCount <= maxEventsPerWindow;
    }

    private void cleanupOldRateLimitCounters(long currentWindow) {
        // Clean up counters from previous windows to prevent memory leaks

                return new SimpleRequestManager() {
                    public OptionalThing<LoginManager> findLoginManager(Class<?> userBeanType) {
                        return OptionalThing.empty();
                    }
                };
            }
        };
        envMap.clear();
        systemHelper.init();
        systemHelper.addShutdownHook(() -> {});
        ComponentUtil.register(systemHelper, "systemHelper");

        writerToClose?.closeQuietly()
      }
    }
  }

  internal class Message(
    val formatOpcode: Int,
    val data: ByteString,
  )

  internal class Close(
    val code: Int,
    val reason: ByteString?,
    val cancelAfterCloseMillis: Long,
  )

  private inner class WriterTask : Task("$name writer") {
    override fun runOnce(): Long {
      try {