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
        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
        ClassDeclaration -  - public partial - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
            MethodDeclaration -  - protected override - void - BuildRenderTree
                MarkupElement - (0:0,0 [80] x:\dir\subdir\Test\TestComponent.cshtml) - elem
                    HtmlContent - (68:0,68 [5] x:\dir\subdir\Test\TestComponent.cshtml)
                        IntermediateToken - (68:0,68 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - Hello
                    HtmlAttribute -  - attributebefore=" - "
                        HtmlAttributeValue - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - 
                            IntermediateToken - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - Html - before
                    ReferenceCapture - (37:0,37 [6] x:\dir\subdir\Test\TestComponent.cshtml) - myElem
                    HtmlAttribute -  - attributeafter=" - "
                        HtmlAttributeValue - (61:0,61 [5] x:\dir\subdir\Test\TestComponent.cshtml) - 
                            IntermediateToken - (61:0,61 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - after
            CSharpCode - (91:2,7 [128] x:\dir\subdir\Test\TestComponent.cshtml)
                IntermediateToken - (91:2,7 [128] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private Microsoft.AspNetCore.Components.ElementReference myElem;\n    public void Foo() { System.GC.KeepAlive(myElem); }\n
