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

    private static final String KEY_PROPERTY = "name";

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

        fun foo() {}

        val bar: String = "bar"

        val bool: Boolean = true

        val isBool: Boolean = true

        var bazar = "bazar"

        var bazool: Boolean = true

        var isFool: Boolean = true

        fun String.fooExt() {}

        fun Int.fooExt() {}

        val String.barExt: String
            get() = "bar"

        var Int.bazarExt: String

		name     string
		metadata map[string]string
		keys     []string
		want     map[string]string
	}{
		{
			name:     "1",
			metadata: map[string]string{"content-type": "application/octet-stream", "etag": "de75a98baf2c6aef435b57dd0fc33c86", "x-amz-storage-class": "STANDARD", "md5": "abcde"},
			keys:     []string{"etag", "md5"},
			want:     map[string]string{"content-type": "application/octet-stream", "x-amz-storage-class": "STANDARD"},

    public static class ApiSystemInfoResponse extends ApiResponse {
        protected List<Map<String, String>> envProps;
        protected List<Map<String, String>> systemProps;
        protected List<Map<String, String>> fessProps;
        protected List<Map<String, String>> bugReportProps;

        public ApiSystemInfoResponse envProps(final List<Map<String, String>> envProps) {
            this.envProps = envProps;
            return this;

    EntryTransformer<String, Integer, String> transformer =
        new EntryTransformer<String, Integer, String>() {
          @Override
          public String transformEntry(String key, Integer value) {
            return key + value;
          }
        };
    ListMultimap<String, String> transformed = Multimaps.transformEntries(multimap, transformer);

   */
  static String nullToEmpty(@CheckForNull String string) {
    return (string == null) ? "" : string;
  }

  /**
   * Returns the string if it is not empty, or a null string otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} if it is not empty; {@code null} otherwise
   */
  @CheckForNull
  static String emptyToNull(@CheckForNull String string) {

            }

            if (!docIdList.isEmpty()) {
                final Map<String, String[]> resultDocIdsCache = getResultDocIdsCache(session);
                resultDocIdsCache.put(queryId, docIdList.toArray(new String[docIdList.size()]));
            }
        });
    }

    public String[] getResultDocIds(final String queryId) {

    public static final String MAVEN_STYLE_ERROR_NAME = "error";
    public static final String MAVEN_STYLE_SUCCESS_NAME = "success";
    public static final String MAVEN_STYLE_FAILURE_NAME = "failure";
    public static final String MAVEN_STYLE_STRONG_NAME = "strong";
    public static final String MAVEN_STYLE_MOJO_NAME = "mojo";
    public static final String MAVEN_STYLE_PROJECT_NAME = "project";

        return available;
    }

    @Override
    public Tuple3<String, String, String> createTask(final String path, final Map<String, Object> docMap) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String thumbnailId = DocumentUtil.getValue(docMap, fessConfig.getIndexFieldId(), String.class);
        final Tuple3<String, String, String> task = new Tuple3<>(getName(), thumbnailId, path);

        // from config
        final String scriptType = crawlingConfig.getScriptType();
        final Map<String, String> scriptConfigMap = crawlingConfig.getConfigParameterMap(ConfigName.SCRIPT);
        final Map<String, String> metaConfigMap = crawlingConfig.getConfigParameterMap(ConfigName.META);
        for (final Map.Entry<String, String> entry : metaConfigMap.entrySet()) {
            final String key = entry.getKey();