The first step is to declare a class that extends from WebTestCase, shown in Listing 3.

第一步是声明一个从WebTestCase扩展而来的类，如清单3所示。

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With a service interface defined, the next step is to implement it in a class that extends GWT's RemoteServiceServlet class.

定义了服务接口之后，下一步就是在扩展GWT的remoteserviceservlet类的类中实现该接口。

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Part 2 guides you step by step through the creation of a custom plug-in that extends the Lotus Sametime user interface.

第2部分引导您一步步地创建扩展Lotus Sametime用户界面的自定义插件。

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The explosion in collaborative consumption is indeed transformative, but Y Combinator-backed Balanced is a step in the wrong direction precisely because it extends and supports the legacy infrastructure rather than offering a true peer-to-peer payment solution.

FORBES: Payments Startup Balanced Innovates In Wrong Direction