Okay, so if that is the case, what does the @Transactional annotation do in Listing 6 when the read-only flag is set and the propagation mode is set to REQUIRED?
如果是这样的话，清单 6 中的 @Transactional 注释在设置了只读标志且传播模式被设置为 REQUIRED 时，它的作用是什么呢？
The propagation of case news offers us the most effective way.
案件新闻的传播给我们提供了最有效的途径。
In this case, propagation creates new versions of the model artifacts, as either physical copies or virtual copies (perhaps only labels.)
在这种情况下，宣传创建了模型产品的新版本，就像物理拷贝或者虚拟的拷贝(可能只有标签)。
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