private static EntityKey getOptionalObjectKey(QueryParameters queryParameters, SessionImplementor session)
    {
        Object optionalObject = queryParameters.getOptionalObject();
        Serializable optionalId = queryParameters.getOptionalId();
        String optionalEntityName = queryParameters.getOptionalEntityName();
        if(optionalObject != null && optionalEntityName != null)
            return new EntityKey(optionalId, session.getEntityPersister(optionalEntityName, optionalObject), session.getEntityMode());
        else
            return null;
    }