*
     * @return the serializer type (either "kryo" or "javabin")
     */
    protected String getSerializerType() {
        return ComponentUtil.getFessConfig().getCrawlerDataSerializer();
    }

    /**
     * Serializes an object to a byte array.
     * <p>
     * The serialization method used depends on the configured serializer type.

    }

    // Test crawler configurations
    @Test
    public void test_crawlerDataSerializer() {
        assertEquals("org.codelibs.fess.crawler.client.AccessTimeoutTarget", fessConfig.getCrawlerDataSerializer());
    }

    @Test
    public void test_crawlerDataEnvParamKeyPattern() {
        assertEquals("^FESS_ENV_.*", fessConfig.getCrawlerDataEnvParamKeyPattern());
    }

    @Test