如果您只想在遇到未定义的情况时抛出异常，那么就没必要使用落后的 (object,object) 模式对 x_with_y() 进行初始化。

The initialization of x_with_y() with a fallback (object,object) pattern is not necessary if you simply want undefined cases to raise an exception.

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然而，这两种模式并未定义这些依赖项组件方法的设计方式。

However, the patterns don't define the design of these dependency components' methods.

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此模式适合在document样式的WSDL中使用，但并不适合rpc样式，因为未定义全局级别的类型。

This schema fits into a document-style WSDL but is not well suited for RPC style since there is no global level type defined.

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