所以闭包会是我们下一个主题的要点，下一个主题是用生成器进行构建。
Closures, consequently are key to my next topic, which is building with builders.
本主题介绍如何使用典型扩展性创建自定义数据生成器。
This topic describes how to create a custom data generator using typical extensibility.
本主题介绍如何使用典型扩展性创建自定义数据生成器。
This topic describes how to create a custom data generator using typical extensibility.
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