public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
        {
            if (context.Host.EnableInstrumentation && context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
            {
                Span contentSpan = target.Children
                    .OfType<Span>()
                    .Where(s => s.Kind == SpanKind.Code || s.Kind == SpanKind.Markup)
                    .FirstOrDefault();

                if (contentSpan != null)
                {
                    context.AddContextCall(contentSpan, context.Host.GeneratedClassContext.BeginContextMethodName, false);
                }
            }

            string writeInvocation = context.BuildCodeString(cw =>
            {
                if (context.Host.DesignTimeMode)
                {
                    context.EnsureExpressionHelperVariable();
                    cw.WriteStartAssignment("__o");
                }
                else if (context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
                {
                    if (!String.IsNullOrEmpty(context.TargetWriterName))
                    {
                        cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteToMethodName);
                        cw.WriteSnippet(context.TargetWriterName);
                        cw.WriteParameterSeparator();
                    }
                    else
                    {
                        cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteMethodName);
                    }
                }
            });

            context.BufferStatementFragment(writeInvocation);
            context.MarkStartOfGeneratedCode();
        }