return buckets.stream().map(e -> {
                final Map<String, Object> map = new HashMap<>();
                map.put(ID, Base64.getUrlEncoder().encodeToString(e.getKeyAsString().getBytes(StandardCharsets.UTF_8)));
                map.put(KEY, e.getKeyAsString());
                map.put(COUNT, e.getDocCount());
                return map;
            }).collect(Collectors.toList());

            try {
                final String pluginMetaContent = getRepositoryContent(pluginUrl + "maven-metadata.xml");
                try (final InputStream is = new ByteArrayInputStream(pluginMetaContent.getBytes(Constants.UTF_8_CHARSET))) {
                    final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
                    factory.setFeature(Constants.FEATURE_SECURE_PROCESSING, true);

        FileUtil.write(
                file1.getAbsolutePath(),
                "token1,seg1,reading1,pos1\ntoken2,seg2,reading2,pos2\ntoken3,seg3,reading3,pos3"
                        .getBytes(Constants.UTF_8));
    }

    @Override
    protected void tearDown() throws Exception {
        file1.delete();
    }
    */

    @Override
    public void setUp() throws Exception {

        }

        final StreamResponse response = asStream(DocumentUtil.getValue(doc, fessConfig.getIndexFieldDocId(), String.class))
                .contentType("text/html; charset=UTF-8").data(content.getBytes(Constants.CHARSET_UTF_8));
        response.headerContentDispositionInline(); // TODO will be fixed in lastaflute
        return response;
    }

                    final Map<String, Object> map = new HashMap<>();
                    final String name = filePath.getFileName().toString();
                    map.put("id", Base64.getUrlEncoder().encodeToString(name.getBytes(StandardCharsets.UTF_8)));
                    map.put("name", name);
                    try {
                        map.put("lastModified", new Date(Files.getLastModifiedTime(filePath).toMillis()));

        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new Role()).map(entity -> {
                entity.setId(Base64.getUrlEncoder().encodeToString(form.name.getBytes(Constants.CHARSET_UTF_8)));
                return entity;
            });
        case CrudMode.EDIT:
            if (form instanceof EditForm) {

                    final String converted = URLEncoder.encode(target, Constants.UTF_8);
                    if (target.equals(converted)) {
                        encodedBuf.append(Base64.getUrlEncoder().encodeToString(target.getBytes(Constants.CHARSET_UTF_8)));
                    } else {
                        encodedBuf.append(converted);
                    }
                } catch (final UnsupportedEncodingException e) {

                    throw new SearchQueryException("Invalid facet field: " + f);
                }
                final String encodedField = BaseEncoding.base64().encode(f.getBytes(StandardCharsets.UTF_8));
                final TermsAggregationBuilder termsBuilder =
                        AggregationBuilders.terms(Constants.FACET_FIELD_PREFIX + encodedField).field(f);

        buf.append("\"memory\":{");
        buf.append("\"heap\":{");
        append(buf, "used", () -> mem.getHeapUsed().getBytes()).append(',');
        append(buf, "committed", () -> mem.getHeapCommitted().getBytes()).append(',');
        append(buf, "max", () -> mem.getHeapMax().getBytes()).append(',');
        append(buf, "percent", () -> mem.getHeapUsedPercent());
        buf.append("},");
        buf.append("\"non_heap\":{");

        testDir.delete();
        testDir.mkdirs();
        file1 = new File(testDir, "synonym.txt");
        FileUtil.writeBytes(file1.getAbsolutePath(), "abc=>123\nxyz,890".getBytes(Constants.UTF_8));
    }

    @Override
    public void tearDown() throws Exception {
        super.tearDown();
        FileUtils.deleteDirectory(testDir);
    }

    public void test_init() {