EnumMapAccumulator::toImmutableMap);
  }

  @IgnoreJRERequirement // see enclosing class (whose annotation Animal Sniffer ignores here...)
  private static final class EnumMapAccumulator<K extends Enum<K>, V> {
    private final BinaryOperator<V> mergeFunction;
    private @Nullable EnumMap<K, V> map = null;

    EnumMapAccumulator(BinaryOperator<V> mergeFunction) {
      this.mergeFunction = mergeFunction;
    }

        },
        EnumMapAccumulator::combine,
        EnumMapAccumulator::toImmutableMap);
  }

  private static final class EnumMapAccumulator<K extends Enum<K>, V> {
    private final BinaryOperator<V> mergeFunction;
    private @Nullable EnumMap<K, V> map = null;

    EnumMapAccumulator(BinaryOperator<V> mergeFunction) {
      this.mergeFunction = mergeFunction;
    }

@Tag("it")
public class DuplicateHostTests extends CrudTestBase {

    private static final String NAME_PREFIX = "duplicateHostTest_";
    private static final String API_PATH = "/api/admin/duplicatehost";
    private static final String LIST_ENDPOINT_SUFFIX = "settings";
    private static final String ITEM_ENDPOINT_SUFFIX = "setting";

    private static final String KEY_PROPERTY = "regular_name";

    @Override

@Tag("it")
public class KeyMatchTests extends CrudTestBase {

    private static final String NAME_PREFIX = "keyMatchTest_";
    private static final String API_PATH = "/api/admin/keymatch";
    private static final String LIST_ENDPOINT_SUFFIX = "settings";
    private static final String ITEM_ENDPOINT_SUFFIX = "setting";

    private static final String KEY_PROPERTY = "term";

    @Override

@Tag("it")
public class PathMapTests extends CrudTestBase {

    private static final String NAME_PREFIX = "pathMapTest_";
    private static final String API_PATH = "/api/admin/pathmap";
    private static final String LIST_ENDPOINT_SUFFIX = "settings";
    private static final String ITEM_ENDPOINT_SUFFIX = "setting";

    private static final String KEY_PROPERTY = "regex";

    @Override

        }
      }
    }
    return output;
  }

  private boolean containsMapping(
      @Nullable Object rowKey, @Nullable Object columnKey, @Nullable Object value) {
    return value != null && value.equals(get(rowKey, columnKey));
  }

  /** Remove a row key / column key / value mapping, if present. */
  private boolean removeMapping(

   */
  static final class SerializedForm implements Serializable {
    private final Object[] rowKeys;
    private final Object[] columnKeys;

    private final Object[] cellValues;
    private final int[] cellRowIndices;
    private final int[] cellColumnIndices;

    private SerializedForm(
        Object[] rowKeys,
        Object[] columnKeys,
        Object[] cellValues,

        }
        return difference(multiset1, multiset2);
      }
    };
  }

  private static final ImmutableMultiset<String> ELEMENTS_TO_FILTER_OUT =
      ImmutableMultiset.of("foobar", "bazfoo", "foobar", "foobar");

  private static final Predicate<String> PREDICATE = not(Predicates.in(ELEMENTS_TO_FILTER_OUT));

  private static TestStringMultisetGenerator filteredGenerator() {
    return new TestStringMultisetGenerator() {

  private static final long DUE_DILIGENCE_MILLIS = 100;
  private static final long TIMEOUT_MILLIS = 5000;

  private final L lockLikeObject;

  private final SynchronousQueue<Request> requestQueue = new SynchronousQueue<>();
  private final SynchronousQueue<Response> responseQueue = new SynchronousQueue<>();

  private @Nullable Throwable uncaughtThrowable = null;

      Class<? super @NonNull E> type, E... contents) {
    return new MinimalCollection<>(type, true, contents);
  }

  private final E[] contents;
  private final Class<? super @NonNull E> type;
  private final boolean allowNulls;

  // Package-private so that it can be extended.
  MinimalCollection(Class<? super @NonNull E> type, boolean allowNulls, E... contents) {