所需的工作很简单，直接使用实现类名称替换框架类名称即可。
It's easy; just replace the skeleton class name with your implementation class name.
他们还用基于EJB的安全性替换定制安全性框架，这使得他们能够维护方法级安全性，同时却极大地简化了代码。
They also replaced the custom security framework with EJB-based security, which enabled them to maintain method-level security while greatly simplifying the code.
这个基本类库是可选的；任何人都可以创建框架来替换它。
The basic library is optional; anybody can create an alternative framework.
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