* that callers don't pass an {@link Entry} by mistake.
   */
  protected V get(K key) {
    return getMap().get(key);
  }

  protected final K k0() {
    return e0().getKey();
  }

  protected final V v0() {
    return e0().getValue();
  }

  protected final K k1() {
    return e1().getKey();
  }

  protected final V v1() {
    return e1().getValue();
  }

    protected int maxRetryCount = 5;
    protected long limitOfDocumentSize = 50000;
    protected QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
    protected int limitPercentage = 100;
    protected long limitNumber = -1;
    protected List<SortBuilder<?>> sortList = new ArrayList<>();

    protected String scrollId = null;

    protected final AtomicLong docCount = new AtomicLong(0);
    protected final long totalDocNum;

    // 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

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

    protected boolean existNextPage;

    protected boolean existPrevPage;

    protected long currentStartRecordNumber;

    protected long currentEndRecordNumber;

    protected List<String> pageNumberList;

    protected String searchQuery;

    protected long execTime;

    protected FacetResponse facetResponse;

    protected boolean partialResults = false;

    protected long queryTime;

        return artifact;
    }

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

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

    protected static final String USER_ROLES = "userRoles";

    protected CachedCipher cipher;

    protected String valueSeparator = "\n";

    protected String roleSeparator = ",";

    protected String parameterKey;

    protected boolean encryptedParameterValue = true;

    protected String headerKey;

    protected boolean encryptedHeaderValue = true;

        checkClosed();
        if (pathProcessor == null) {
            pathProcessor = createPathProcessor();
        }
        return pathProcessor;
    }

    protected PathProcessor createPathProcessor() {
        return new DefaultPathProcessor();
    }

    private ChecksumProcessor checksumProcessor;

    public final ChecksumProcessor getChecksumProcessor() {

  public static class ImmutableSetCopyOfGenerator extends TestStringSetGenerator {
    @Override
    protected Set<String> create(String[] elements) {
      return ImmutableSet.copyOf(elements);
    }
  }

  public static class ImmutableSetUnsizedBuilderGenerator extends TestStringSetGenerator {
    @Override
    protected Set<String> create(String[] elements) {
      ImmutableSet.Builder<String> builder = ImmutableSet.builder();

    protected String highlightTagPre;

    protected String highlightTagPost;

    protected boolean useSession = true;

    protected final Map<String, String> pageCacheMap = new ConcurrentHashMap<>();

    protected final Map<String, String> initFacetParamMap = new HashMap<>();

    protected final Map<String, String> initGeoParamMap = new HashMap<>();

    extends AbstractContainerTester<Collection<E>, E> {

  // TODO: replace this with an accessor.
  protected Collection<E> collection;

  @Override
  protected Collection<E> actualContents() {
    return collection;
  }

  // TODO: dispose of this once collection is encapsulated.
  @Override
  @CanIgnoreReturnValue
  protected Collection<E> resetContainer(Collection<E> newContents) {
    collection = super.resetContainer(newContents);