@Override
            void doInterpolate(Object target, InterpolateObjectAction ctx) throws IllegalAccessException {
                @SuppressWarnings("unchecked")
                Map<Object, Object> m = (Map<Object, Object>) field.get(target);
                if (m == null || m.isEmpty()) {
                    return;
                }

                for (Map.Entry<Object, Object> entry : m.entrySet()) {

    }

    private static class TestIngester extends Ingester {
        int processCalled = 0;

        @Override
        public Map<String, Object> process(Map<String, Object> target, DataStoreParams paramMap) {
            processCalled++;
            Map<String, Object> result = new HashMap<>(target);
            result.put("status", "processed");
            return result;
        }
    }

        .addEqualityGroup(
            entry,
            Tables.<@Nullable Object, @Nullable Object, @Nullable Object>immutableCell(
                null, null, null))
        .addEqualityGroup(
            Tables.<String, @Nullable Object, @Nullable Object>immutableCell("bar", null, null))
        .addEqualityGroup(
            Tables.<@Nullable Object, Integer, @Nullable Object>immutableCell(null, 2, null))
        .addEqualityGroup(

			wants:    objInfos[:3],
			wantExpired: []ObjectToDelete{
				{ObjectV: ObjectV{ObjectName: obj, VersionID: objInfos[3].VersionID}},
				{ObjectV: ObjectV{ObjectName: obj, VersionID: objInfos[4].VersionID}},
			},
		},
		{
			objInfos:    allVersExpObjInfos,
			wants:       nil,
			wantExpired: []ObjectToDelete{{ObjectV: ObjectV{ObjectName: obj, VersionID: allVersExpObjInfos[0].VersionID}}},
		},
		{

		}

		return nil
	}

	prefix = retainSlash(prefix)

	for object := range clnt.ListObjects(cctx, bucket, minio.ListObjectsOptions{
		Prefix:    prefix,
		Recursive: false,
	}) {
		if object.Err != nil {
			return object.Err
		}

		if object.Key == prefix {
			continue
		}

		isDir := strings.HasSuffix(object.Key, SlashSeparator)
		info := minioFileInfo{

            return delegate.entrySet();
          }

          @Override
          public boolean contains(@Nullable Object object) {
            if (object instanceof Entry<?, ?> && ((Entry<?, ?>) object).getKey() == null) {
              return false;
            }
            try {
              return super.contains(object);
            } catch (ClassCastException e) {
              return false;
            }
          }

final class CollectCollectors {

  private static final Collector<Object, ?, ImmutableList<Object>> TO_IMMUTABLE_LIST =
      Collector.of(
          ImmutableList::builder,
          ImmutableList.Builder::add,
          ImmutableList.Builder::combine,
          ImmutableList.Builder::build);

  private static final Collector<Object, ?, ImmutableSet<Object>> TO_IMMUTABLE_SET =
      Collector.of(
          ImmutableSet::builder,

@GwtCompatible
final class CollectCollectors {

  private static final Collector<Object, ?, ImmutableList<Object>> TO_IMMUTABLE_LIST =
      Collector.of(
          ImmutableList::builder,
          ImmutableList.Builder::add,
          ImmutableList.Builder::combine,
          ImmutableList.Builder::build);

  private static final Collector<Object, ?, ImmutableSet<Object>> TO_IMMUTABLE_SET =
      Collector.of(
          ImmutableSet::builder,

    }

    @Test
    public void test_complex_document_structure() {
        Map<String, Object> doc = new HashMap<>();

        Map<String, Object> nestedMap = new HashMap<>();
        nestedMap.put("nestedKey", "nestedValue");
        doc.put("nested", nestedMap);

        List<Map<String, Object>> listOfMaps = new ArrayList<>();
        listOfMaps.add(nestedMap);
        doc.put("listOfMaps", listOfMaps);

    }

    @Override
    public Object put(final Object key, final Object value) {
        return getProperties().put(key, value);
    }

    @Override
    public void putAll(final Map<? extends Object, ? extends Object> t) {
        getProperties().putAll(t);
    }

    @Override
    public Object remove(final Object key) {
        return getProperties().remove(key);
    }