请注意，清单3中定义的sessiondata类是用于保存各种购物车信息的用户自定义数据结构(点击本文顶部或底部的code图标)。
Note that the SessionData class defined in Listing 3 is a user-defined data structure to store various shopping cart information (Click the code icon at the top or bottom of this article).
你可以使用每行包含多个元素的数据池，但是用户必须在这个测试的自定义代码中增加一些功能来取出单个元素。
You can use data pools that contain multiple elements per line, but the user would have to add functions to the test's custom code to extract individual elements.
危机对更加复杂的设计建模，除了逻辑型，字符串型，整数型，用户自定义的数据类型，您可以对更加复杂的问题建模。
To model more complex designs, you can type tags by stereotypes and meta-classes, in addition to Boolean, string, integer, user-defined data type, and terms.
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