How to render a optional section in the _Layout page

By default @RenderSection("sectionName") method searches for the section sectionName that is defined in the view page.

@section sectionName {
@Scripts.Render("~/bundles/jqueryval")
}

However, if we want to make the section optional; we can pass 2nd parameter of the @RenderSection method to false that will ignore if section is not defined in the view page.