要查看逻辑派生类型，在导航树中展开ServiceMetadata。
To see logical derivation types, expand Service Metadata in the navigation tree.
XPath转换有些复杂，因为它们容许签名者派生出省略一部分源文件的XML文件，并将xml树限制为它原来的那样。
XPath transforms are a little tricky because they permit the signer to derive an XML document that omits portions of the source document, limiting the XML tree, as it were.
事实上，当在运行时创建树时，将会向树的SOAP. Context部分添加某些从WSDL派生的关键信息。
In fact, some key information derived from WSDL is added to the SOAP.Context part of the tree when the tree is created at run time.
将.bar文件部署到代理，使消息流能够在运行时根据WSDL检查消息，并在逻辑树中提供WSDL派生的信息。
The.bar file is deployed to a broker, enabling the message flow to check messages against the WSDL at run time and to provide WSDL-derived information in the logical tree.
当代码运行时，在客户端上派生出来的树会具有和服务器上的树相同的叶子数量。
When this code runs, the tree objects created on clients will have the correct value for numLeaves from the server.
当代码运行时，在客户端上派生出来的树会具有和服务器上的树相同的叶子数量。
When this code runs, the tree objects created on clients will have the correct value for numLeaves from the server.
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