Document - 
    Checksum - 
    NamespaceDeclaration -  - Microsoft.AspNetCore.Razor.Evolution.IntegrationTests.TestFiles
        UsingStatement -  - System
        UsingStatement -  - System.Threading.Tasks
        UsingStatement - (1:0,1 [17] Usings.cshtml) - System.IO
        UsingStatement - (19:1,1 [34] Usings.cshtml) - Foo = System.Text.Encoding
        UsingStatement - (71:4,1 [21] Usings.cshtml) - static System
        UsingStatement - (93:5,1 [29] Usings.cshtml) - static System.Console
        UsingStatement - (123:6,1 [43] Usings.cshtml) - static global::System.Text.Encoding
        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_Runtime -  - 
            RazorMethodDeclaration -  - public - async - System.Threading.Tasks.Task - ExecuteAsync
                HtmlContent - (68:3,0 [2] Usings.cshtml) - \n
                HtmlContent - (166:7,0 [30] Usings.cshtml) - \n<p>Path's full type name is 
                CSharpExpression - (197:8,29 [21] Usings.cshtml)
                    RazorIRToken - (197:8,29 [21] Usings.cshtml) - CSharp - typeof(Path).FullName
                HtmlContent - (218:8,50 [40] Usings.cshtml) - </p>\n<p>Foo's actual full type name is 
                CSharpExpression - (259:9,35 [20] Usings.cshtml)
                    RazorIRToken - (259:9,35 [20] Usings.cshtml) - CSharp - typeof(Foo).FullName
                HtmlContent - (279:9,55 [4] Usings.cshtml) - </p>
