I have a custom page I'm adding to the Episerver UI, and I'm following the guides for implementing the new "blue" UI / navigation:
- https://world.episerver.com/blogs/ryan-bare/dates/2019/7/new-cms-ui-navigation/
- https://world.episerver.com/blogs/ryan-bare/dates/2019/6/cms-ui-refresh/
- https://world.episerver.com/documentation/developer-guides/CMS/user-interface/extending-the-navigation/upgrading-from-old-to-new-navigation/
But I'm getting an error when I reference this extension method: @Html.Raw(Html.ApplyPlatformNavigation()). What using statement should I have in my view (or in web.config) for this?