@Target(value=METHOD) @Retention(value=RUNTIME) @Documented public @interface RequestWrapper
localName的默认值是operationName ,如WebMethod注释所定义, targetNamespace是SEI的目标命名空间。 
        当从Java开始时,使用该注解来解决文档文字模式中的重载冲突。 在这种情况下,只需要className 。 
public abstract String localName
public abstract String targetNamespace
public abstract String className
public abstract String partName
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