Adding custom svg icons Angular不再起作用，所以我需要知道如何执行此操作->
我有我的mdi.svg，其中包含很多svg，我在我的app.module中添加了MatIconModule，并且
iconRegistry.addSvgIconSet(sanitizer.bypassSecurityTrustResourceUrl('/assets/icons/mdi.svg'));
我想在mdi.svg文件中添加一些SVG，所以我只复制了
<g id="account-card-details">
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</g>
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</g>
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<g id="account-check">
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</g>
我添加的两个svg tho（两维和三维）不起作用，什么也没有出现，如果我称“本地” svg（如帐户检查），则确实使用
出现<mat-icon svgIcon="two-d"></mat-icon>
怎么了？