The Service Modeler is a graphical tool that provides a visualization of an OData service, including its backend and local annotations.
Service Modeler 是一个具备图形化界面的工具，能以可视化的方式查看 OData 服务的后台服务器端和本地端的注解。
借助 Service Modeler，能轻易找到 entities，projections 和其关联的注解。
The Service Modeler helps you easily find entities or projections and their associated annotations.
Ctrl + Shift + P ： 打开 Service Modeler
查看所有的 service 明细：
点击 UI.SelectionFields 这个 annotation 右边的 copy locally 按钮：
点击之后，原本定义在 SEPMRA_PROD_MAN_ANNO_MDL.xml 里的 UI.SelectionFields, 就被拷贝到了 local annotation files 里：
UI.SelectionFields under SEPMRA_PROD_MAN_ANNO_MDL.xml has now been formatted with a strike through, giving you a visual indication that UI.SelectionsFields at runtime will be picked up from the local annotation file.
The local annotation.xml file will open in another tab, with the exact code to be changed highlighted.