what does RazorView do?

Question

I know that cshtml file gets complied into RazorPage, for example, I have a Products.cshtml file:

public class Views_Home_Products : RazorPage<dynamic>
{
   public async override Task ExecuteAsync()
   {
      WriteLiteral("<!DOCTYPE html>\r\n<html>\r\n");
      WriteLiteral("<head>");
      WriteLiteral(@"<link href=""/lib/twitter-bootstrap/css/bootstrap.min.css"" rel=""stylesheet"" />");
      WriteLiteral("</head>");
      WriteLiteral("<body>");
      // ...
      WriteLiteral("<th>Name</th><td>");
      Write(Model.Name);
      // ...
   }
   // ...
}

but there is also a RazorView class (https://source.dot.net/#Microsoft.AspNetCore.Mvc.Razor/RazorView.cs)

public class RazorView : IView
{
   private readonly IRazorViewEngine _viewEngine;
   private readonly IRazorPageActivator _pageActivator;
   private readonly HtmlEncoder _htmlEncoder;
   // ... 

   public RazorView(IRazorViewEngine viewEngine, 
                    IRazorPageActivator pageActivator,
                    IReadOnlyList<IRazorPage> viewStartPages, 
                    IRazorPage razorPage
                    HtmlEncoder htmlEncoder,
                    DiagnosticListener diagnosticListener) 
   { 
      _viewEngine = viewEngine;
      _pageActivator = pageActivator;
      ViewStartPages = viewStartPages;
      RazorPage = razorPage;
      _htmlEncoder = htmlEncoder;
      _diagnosticListener = diagnosticListener;
   }

   public string Path => RazorPage.Path;

   public IRazorPage RazorPage { get; }  // <--------------------- this is the compiled view file
   
   public IReadOnlyList<IRazorPage> ViewStartPages { get; }

   // ...

   public virtual async Task RenderAsync(ViewContext context)  
   {
      // eventually call RazorPage.ExecuteAsync();   
   }
}

So why we need to have a seperate IView class that wraps RazorPage?