Hibernate logs warning for PersistenceUnitInfo.newTempClassLoader() == null, which it always is in EJB3

WARN [Ejb3Configuration] Persistence provider caller does not implements the EJB3 spec correctly. PersistenceUnitInfo.getN
ewTempClassLoader() is null.

Coming from org.hibernate.ejb.Ejb3Configuration
private void addXMLEntities(List<String> xmlFiles, PersistenceUnitInfo info, List<String> entities) {
//TODO handle inputstream related hbm files
ClassLoader newTempClassLoader = info.getNewTempClassLoader();
if (newTempClassLoader == null)

{ log.warn( "Persistence provider caller does not implements the EJB3 spec correctly. PersistenceUnitInfo.getNewTempClassLoader() is null." ); return; }

However, implementation of org.jboss.ejb3.entity.PersistenceUnitInfoImpl has:
public ClassLoader getNewTempClassLoader()

{ return null; }