You have also seen how to generate a SOAP client to the registry and use it to query and retrieve policy and policy attachment information.

您还了解了如何生成注册中心的SOAP客户端，并将其用于查询和检索策略及策略附件信息。

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BookDownloadUpload. Allows you to retrieve information about a book, including the file attachment.

允许您检索关于图书的信息，包括文件附件。

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The caller needs to store the token so that it can be used later to retrieve the attachment from the Claim Check service.

调用方需要存储令牌，这样一来，稍后就可以使用它从Claim Check服务中检索附件。

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