XMI is a sophisticated specification (version 1.2 is over 400 pages), so, in this article, I will limit myself to the bare minimum description needed for automatic derivation.
XMI 是一个非常复杂的规范（1.2 版有 400 多页），本文基于实现自动派生的需要做尽可能简单的介绍。
It gives Ruby processors the minimum restriction to be a "Ruby". So even 1.8.7 needs stricter specification like RubySpec to keep compatibility between implementations.
草案设计得比较宽松，它将对Ruby处理程序的限制降到了最低，因此就算是1.8.7这样的版本也会需要类似RubySpec这样的更严格的规范来保证不同实现之间的兼容性。
This gives us an indication of the minimum amount of use case transactions in any use case specification: there are at least as many transactions as there are flows. 8.
它给了您一个任何用例配置中用例事务最小数量的指示：流程中至少应该有以下数量的事务。
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