code: @Override
      public final Query createNativeQuery(String sqlString, Class resultClass)
      {
          checkClosed();
          checkTransactionNeeded();
  
          return getPersistenceDelegator().createNativeQuery(sqlString, resultClass);
      }
docs: /*
  (non-Javadoc)
  
  @see javax.persistence.EntityManager#createNativeQuery(java.lang.String,
  java.lang.Class)