@Override
        Translator createComposite(Class<? extends Translator> compositeClass,
                                   List<Translator> children,
                                   Set<Class<? extends Translator>> excludeChildren,
                                   Map<String, Param> params, MimeTypes mimeTypes,
                                   ServiceLoader loader)
                throws InstantiationException {
            throw new InstantiationException("Only one translator supported");
        }
Gets parameters from a given

@param el xml node which has {@link #PARAMS_TAG_NAME} child
@return Map of key values read from xml
tika-core/src/main/java/org/apache/tika/config/TikaConfig.java