*/
@SuppressWarnings("unchecked")
public static void contributeMetaWorker(MappedConfiguration<Class, MetaDataExtractor> configuration)
{
configuration.addInstance(Meta.class, MetaAnnotationExtractor.class);
configuration.add(Secure.class, new FixedExtractor(MetaDataConstants.SECURE_PAGE));
configuration.addInstance(ContentType.class, ContentTypeExtractor.class);
configuration.add(WhitelistAccessOnly.class, new FixedExtractor(MetaDataConstants.WHITELIST_ONLY_PAGE));
configuration.addInstance(UnknownActivationContextCheck.class, UnknownActivationContextExtractor.class);
}