Migrate the model code.

迁移模型代码。

Writing tests is easier than writing model code.

编写测试要比编写模型代码简单得多。

Unit tests exercise Rails model code and sometimes helpers.

单元测试针对的是Rails模型代码，有时还包括帮助器。

The servlet, portlet, and the model code are tightly coupled.

Portlet 和模型代码是紧密耦合的。

How to: Compile and Run the Automation Object Model Code Examples.

如何：编译和运行自动化对象模型代码示例。