NHibernate,Get<TDto>(TId id)-是否应该开始事务?

我是新来的。。。我应该吗 .BeginTransaction() tx.Commit()/.CommitAsync() IDisposable 可以吗?

 public override async Task<TDto> Get(int id)
    {
        using (var sessionBuilder = NHibernateConfiguration.Instance.BuildSessionFactory())
        using (var session = sessionBuilder.OpenSession())
        using (var tx = session.BeginTransaction())
        {
            return await session.GetAsync<TDto>(id);
        }
    }