*     that involve a null element being present.
   */
  protected int getNullLocation() {
    return getNumElements() / 2;
  }

  protected MinimalCollection<E> createDisjointCollection() {
    return MinimalCollection.of(e3(), e4());
  }

  protected MinimalCollection<E> emptyCollection() {
    return MinimalCollection.of();
  }

  protected final E e0() {
    return samples.e0();
  }

    // keeping parsed request parameters, normal texts or uploaded files
    // keys are requested parameter names (treated as field name here)
    protected Map<String, Object> elementsAll; // lazy-loaded, then after not null
    protected Map<String, MultipartFormFile> elementsFile; // me too
    protected Map<String, String[]> elementsText; // me too

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

    @Resource
    private Client client;

    protected int sizeForDelete = 100;
    protected String scrollForDelete = "1m";
    protected int sizeForCursor = 100;
    protected String scrollForCursor = "1m";
    protected String searchTimeout = "3m";
    protected String indexTimeout = "3m";
    protected String scrollSearchTimeout = "3m";
    protected String bulkTimeout = "3m";
    protected String deleteTimeout = "3m";

    assertTrue(future.isCancelled());
  }

  private class NullService extends AbstractScheduledService {
    @Override
    protected void runOneIteration() throws Exception {}

    @Override
    protected Scheduler scheduler() {
      return configuration;
    }

    @Override
    protected ScheduledExecutorService executor() {
      return executor;
    }
  }

    assertTrue(future.isCancelled());
  }

  private class NullService extends AbstractScheduledService {
    @Override
    protected void runOneIteration() throws Exception {}

    @Override
    protected Scheduler scheduler() {
      return configuration;
    }

    @Override
    protected ScheduledExecutorService executor() {
      return executor;
    }
  }

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        ssoManager = new SsoManager() {
            @Override
            protected String getSsoType() {
                return currentSsoType;
            }
        };
        testAuthenticator = new TestSsoAuthenticator();
    }

    @Override

        return artifact;
    }

    protected void createLocalArtifact(Artifact artifact) throws Exception {
        createArtifact(artifact, localRepository());
    }

    protected void createRemoteArtifact(Artifact artifact) throws Exception {
        createArtifact(artifact, remoteRepository());
    }

    /** NetBIOS name cache policy in seconds */
    protected int netbiosCachePolicy = 60 * 60 * 10;
    /** NetBIOS socket timeout in milliseconds */
    protected int netbiosSocketTimeout = 5000;
    /** NetBIOS send buffer size */
    protected int netbiosSendBufferSize = 576;
    /** NetBIOS receive buffer size */
    protected int netbiosRevcBufferSize = 576;
    /** NetBIOS retry count */

    protected DocMeta docMeta;
    protected final EntityUniqueDrivenProperties __uniqueDrivenProperties = newUniqueDrivenProperties();
    protected final EntityModifiedProperties __modifiedProperties = newModifiedProperties();
    protected EntityModifiedProperties __specifiedProperties;
    protected boolean __createdBySelect;

    /** Total number of data bytes to be sent */
    protected int totalDataCount;
    /** Maximum number of parameter bytes the server should return */
    protected int maxParameterCount;
    /** Maximum number of data bytes the server should return */
    protected int maxDataCount;
    /** Maximum number of setup words the server should return */
    protected byte maxSetupCount;