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
        UsingDirective - (1:0,1 [43] x:\dir\subdir\Test\TestComponent.cshtml) - Microsoft.AspNetCore.Components.Web
        ClassDeclaration -  - public partial - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
            MethodDeclaration -  - protected override - void - BuildRenderTree
                MarkupElement - (44:1,0 [77] x:\dir\subdir\Test\TestComponent.cshtml) - input
                    HtmlAttribute - (61:1,17 [7] x:\dir\subdir\Test\TestComponent.cshtml) - onfocus=" - "
                        CSharpExpressionAttributeValue -  - 
                            IntermediateToken -  - CSharp - Microsoft.AspNetCore.Components.EventCallback.Factory.Create<Microsoft.AspNetCore.Components.Web.FocusEventArgs>(this, 
                            LazyIntermediateToken - (61:1,17 [7] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - OnFocus
                            IntermediateToken -  - CSharp - )
                    ComponentAttribute - (95:1,51 [22] x:\dir\subdir\Test\TestComponent.cshtml) - onfocus - PreventDefault - AttributeStructure.DoubleQuotes
                        CSharpExpression - 
                            LazyIntermediateToken - (95:1,51 [22] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - ShouldPreventDefault()
            CSharpCode - (130:2,7 [95] x:\dir\subdir\Test\TestComponent.cshtml)
                LazyIntermediateToken - (130:2,7 [95] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    void OnFocus(FocusEventArgs e) { }\n\n    bool ShouldPreventDefault() { return false; }\n
