}

  interface Base {
    CharSequence getId();
  }

  interface Sub extends Base {
    @Override
    String getId();
  }

  private static final class ForwardingSub implements Sub {
    private final Sub delegate;

    ForwardingSub(Sub delegate) {
      this.delegate = delegate;
    }

    @Override
    public String getId() {
      return delegate.getId();
    }

        createTestIndex();

        List<String> results = ScrollOperationHelper.scrollSearch(client, suggester.settings(), INDEX_NAME, QueryBuilders.matchAllQuery(),
                10, (hit, accumulator) -> accumulator.add(hit.getId()));

        assertNotNull(results);
        assertTrue(results.isEmpty());
    }

    @Test
    public void testScrollSearch_singlePage() {
        createTestIndex();
        indexDocuments(5);

        assertEquals("fess-ds", ArtifactType.DATA_STORE.getId());
        assertEquals("fess-theme", ArtifactType.THEME.getId());
        assertEquals("fess-ingest", ArtifactType.INGEST.getId());
        assertEquals("fess-script", ArtifactType.SCRIPT.getId());
        assertEquals("fess-webapp", ArtifactType.WEBAPP.getId());
        assertEquals("fess-thumbnail", ArtifactType.THUMBNAIL.getId());

                context.logger.warn(
                        "* " + extension.getId() + " configured in " + formatLocation(extension.getLocation("")));
            }
        }

        context.logger.debug("Selected core extensions (in loading order):");
        for (CoreExtension source : selectedExtensions.values()) {
            context.logger.debug("* " + source.getId() + ": " + formatLocation(source.getLocation("")));
        }

    @Test
    public void test_Status_OK() {
        assertEquals(0, Status.OK.getId());
    }

    @Test
    public void test_Status_BAD_REQUEST() {
        assertEquals(1, Status.BAD_REQUEST.getId());
    }

    @Test
    public void test_Status_SYSTEM_ERROR() {
        assertEquals(2, Status.SYSTEM_ERROR.getId());
    }

    @Override
    public int compareTo(MetadataGraphVertex vertex) {
        if (vertex == null || vertex.getMd() == null) {
            return 1;
        }

        ArtifactMetadata vmd = vertex.getMd();

        if (vmd == null) {
            if (md == null) {
                return 0;
            } else {
                return 1;
            }

            final GetResponse getResponse = client.prepareGet().setIndex(index).setId(item.getId()).get(settings.getIndexTimeout());
            if (update && getResponse.isExists()) {
                final IndexRequestBuilder indexRequestBuilder = new IndexRequestBuilder(client, IndexAction.INSTANCE, index);
                indexRequestBuilder.setId(item.getId())
                        .setOpType(IndexRequest.OpType.INDEX)

    def __init__(self):
        self.db = DBSession()

    def __enter__(self):
        return self.db

    def __exit__(self, exc_type, exc_value, traceback):
        self.db.close()


async def get_db():
    with MySuperContextManager() as db:

    @Override
    public String id() {
        return lifecycleOverlay.getId();
    }

    @Override
    public Collection<Phase> phases() {
        return lifecycleOverlay.getPhases().stream()
                .map(phase -> new Phase() {
                    @Override
                    public String name() {
                        return phase.getId();
                    }

                    @Override

            ComponentUtil.getComponent(ScheduledJobBhv.class)
                    .selectByPK(scheduledJob.getId())
                    .ifPresent(e -> params.put(Constants.SCHEDULED_JOB, e))
                    .orElse(() -> {
                        logger.warn("Job {} is not found.", scheduledJob.getId());
                    });
            return params;
        };