Document - 
    NamespaceDeclaration -  - Test
        UsingDirective - (3:1,1 [14] ) - System
        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
        UsingDirective - (53:3,1 [19] ) - System.Linq
        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Blazor.Components.BlazorComponent - 
            MethodDeclaration -  - protected override - void - BuildRenderTree
                CSharpCode - 
                    IntermediateToken -  - CSharp - base.BuildRenderTree(builder);
                HtmlContent - 
                    IntermediateToken -  - Html - <elem 
                HtmlContent - 
                    IntermediateToken -  - Html - attributebefore="
                    IntermediateToken - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - Html - before
                    IntermediateToken -  - Html - " 
                HtmlContent - 
                    IntermediateToken -  - Html - attributeafter="
                    IntermediateToken - (61:0,61 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - after
                    IntermediateToken -  - Html - " 
                RefExtensionNode - (37:0,37 [6] x:\dir\subdir\Test\TestComponent.cshtml) - myElem - Element
                HtmlContent - 
                    IntermediateToken -  - Html - >
                HtmlContent - (68:0,68 [5] x:\dir\subdir\Test\TestComponent.cshtml)
                    IntermediateToken - (68:0,68 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - Hello
                HtmlContent - 
                    IntermediateToken -  - Html - </elem>
            CSharpCode - (96:2,12 [62] x:\dir\subdir\Test\TestComponent.cshtml)
                IntermediateToken - (96:2,12 [62] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private Microsoft.AspNetCore.Blazor.ElementRef myElem;\n
