}
    }

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

    /**
     * Serializes an object to a byte array.
     * <p>