private static final Logger logger = LogManager.getLogger(SearchApiTests.class);
    private static final String NAME_PREFIX = "searchApiTest_";
    private static final String DEFAULT_TESTDATA_PATH = "/tmp/fess-testdata";
    private static final String CRAWL_LABEL = NAME_PREFIX + "_label";
    private static final String TEST_LABEL = "tools";
    private static String fileConfigId;
    private static String labelId;