The checkout method accepts a ticket as a DataObject.

checkout方法接受一个票证作为DataObject。

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Listing 3 shows the checkout method checking out an attachment.

清单3显示了签出附件的checkout方法。

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Refer to the project interchange file in the Download section to see the code for the other checkout method.

参考下载部分中的项目交换文件，查看另一个checkout方法的代码。

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One of the next big things was Radio-frequency identification (RFID) contactless payment technology, which was said to provide a simple method of payment that could reduce time spent in checkout lines.

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