String prop = config.getProperty(ConfigKeys.MAPPING_LOADERS, "");
String prop = config.getProperty(ConfigKeys.MAPPING_LOADER_FACTORIES, "");
    public MappingLoaderRegistry(final Configuration config) {        String prop = config.getProperty(ConfigKeys.MAPPING_LOADERS, "");        StringTokenizer tokenizer = new StringTokenizer(prop, ", ");        while (tokenizer.hasMoreTokens()) {            String classname = tokenizer.nextToken();            try {                ClassLoader loader = getClass().getClassLoader();                Class cls = loader.loadClass(classname);                Class[] types = new Class[] {ClassLoader.class};                Object[] params = new Object[] {loader};                Object obj = cls.getConstructor(types).newInstance(params);                _mappingLoaders.add(obj);            } catch (Exception ex) {                LOG.error("Problem instantiating mapping loader implementation: "                        + classname, ex);            }        }    }