If "phone" was an attribute of the employee element, then it can exist only once per employee, and we could not add child elements too it, which may hinder schema evolution over time.
如果“phone”是雇员元素的一个属性,那么对于每个雇员,它只能出现一次,我们也不能为之添加子元素,这将妨碍模式随时间而变化。
This method does not add child nodes or attributes to the specified child element.
此方法不向指定的子元素添加子节点或特性。
For example, if you create a single document interface application, you cannot add child frame styles.
例如,如果创建的是单文档界面应用程序,则不能添加子框架样式。
Right-click the getQuote operation and select Add Child>input.
右键单击getQuote操作并选择Add Child>input。
Right-click the getQuote operation and select Add Child>input.
右键单击getQuote操作并选择Add Child>input。
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