/**
  * In case persistence unit is not uniquely defined by name this method is called to generate a
  * unique name.
  */
 public String createUniquePersistenceUnitName(PersistenceUnitInfo puInfo) {
   return PersistenceUnitProcessor.buildPersistenceUnitName(
       puInfo.getPersistenceUnitRootUrl(), puInfo.getPersistenceUnitName());
 }