code: @Override
      public void configure()
      {
          log.debug("Loading Entity Metadata...");
          ApplicationMetadata appMetadata = kunderaMetadata.getApplicationMetadata();
  
          for (String persistenceUnit : persistenceUnits)
          {
              if (appMetadata.getMetamodelMap().get(persistenceUnit.trim()) != null)
              {
                  if (log.isDebugEnabled())
                  {
                      log.debug("Metadata already exists for the Persistence Unit " + persistenceUnit + ". Nothing to do");
                  }
              }
              else
              {
                  loadEntityMetadata(persistenceUnit);
              }
          }
      }
docs: /*
  (non-Javadoc)
  
  @see com.impetus.kundera.configure.Configuration#configure()