* values, it lies outside the submap/submultiset ranges we test, and the variety of tests that
   * exercise null handling fail on those subcollections.
   */
  public abstract static class NullsBefore implements Comparator<@Nullable String>, Serializable {
    private final String justAfterNull;

    protected NullsBefore(String justAfterNull) {
      if (justAfterNull == null) {

    private CommonServerMessageBlockRequest mockRequest;

    @Mock
    private CommonServerMessageBlockResponse mockNextResponse;

    private TestServerMessageBlock2Response response;

    // Test implementation of abstract ServerMessageBlock2Response
    private static class TestServerMessageBlock2Response extends ServerMessageBlock2Response {

        private ServerMessageBlock2 nextBlock;
        private boolean async = false;

@DisplayName("DcerpcMessage Tests")
class DcerpcMessageTest {

    @Mock
    private NdrBuffer mockBuffer;

    private TestDcerpcMessage message;

    // Concrete implementation for testing abstract DcerpcMessage
    private static class TestDcerpcMessage extends DcerpcMessage {
        private int opnumValue;

        public TestDcerpcMessage(int opnumValue) {
            this.opnumValue = opnumValue;
        }

import org.opensearch.search.aggregations.metrics.TopHitsAggregationBuilder;
import org.opensearch.search.aggregations.metrics.ValueCountAggregationBuilder;

/**
 * @author ESFlute (using FreeGen)
 */
public abstract class BsFavoriteLogCA extends EsAbstractConditionAggregation {

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

        assertEquals("field1", responseFields[0]);
        assertEquals("field2", responseFields[1]);
        assertEquals("field3", responseFields[2]);
    }

    // Test implementation of abstract SearchRequestParams
    private static class TestSearchRequestParams extends SearchRequestParams {
        String query = "";
        Map<String, String[]> fields = new HashMap<>();

import com.google.common.hash.HashFunction;
import com.google.common.hash.Hashing;

import jakarta.annotation.Resource;

/**
 * Abstract base class for crawler services that interact with OpenSearch.
 *
 * @author shinsuke
 *
 */
public abstract class AbstractCrawlerService {
    /**
     * Creates a new instance of AbstractCrawlerService.
     */
    public AbstractCrawlerService() {
        // NOP

 * to mutate the event parameters, or be re-entrant back into the client. Any IO - writing to files
 * or network should be done asynchronously.
 */
abstract class EventListener {
  /**
   * Invoked as soon as a call is enqueued or executed by a client. In case of thread or stream
   * limits, this call may be executed well before processing the request is able to begin.
   *

          // decoding stream may differ from the messages for the decode methods.
        } catch (IOException e) {
          fail("Expected DecodingException but got: " + e);
        }
      }
    };

    abstract void assertFailsToDecode(
        BaseEncoding encoding, String cannotDecode, @Nullable String expectedMessage);
  }

  @GwtIncompatible // Reader/Writer
  private static void testStreamingEncodingWithCasing(

 * <td>{@literal yyyy-MM-dd}</td>
 * </tr>
 * </table>
 *
 * @author higa
 * @see TimeConversionUtil
 * @see TimestampConversionUtil
 */
public abstract class DateConversionUtil {

    /**
     * Do not instantiate.
     */
    protected DateConversionUtil() {
    }

    /** Array of styles held by {@link DateFormat}. */

import java.lang.reflect.Method;
import java.util.List;
import java.util.StringTokenizer;

/**
 * Utility class for string operations.
 *
 * @author higa
 * @author shinsuke
 */
public abstract class StringUtil {

    /**
     * Do not instantiate.
     */
    protected StringUtil() {
    }

    /**
     * A system line separator.
     */