// the repository.xml file.
ClassDescriptor cld = broker.getClassDescriptor(PerformanceArticle.class);
JdbcConnectionDescriptor jcd = MetadataManager.getInstance().connectionRepository()
.getDescriptor(TestHelper.DEF_KEY);
ConnectionFactory cf = ConnectionFactoryFactory.getInstance().createConnectionFactory();
cf.releaseConnection(jcd, conn);
}
/**
* deletes all PerformanceArticle created by <code>insertNewArticles</code>.
*/