键入？会显示一个可用方法的列表。

Typing a? Will show a list of the available methods.

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清单1中的代码显示了同步方法调用，其中的客户机线程将阻塞在服务调用内，在调用完成且结果可用之后才会返回。

The Listing 1 code shows a synchronous service method call where the client thread blocks inside the service call and doesn't return until the call is completed and the results are available.

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如果位于对象的末端，则显示可用方法的语法。

If you are at the end of an object, the display is the syntax for available methods.

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