Renders a Markdig Markdig.Syntax.HeadingBlock as a MarkdownSelectableTextBlock
and registers it as an anchor target for in-document navigation. With
AreHeadingsFoldable, the heading starts with a fold button
(markdown-heading-fold) that hides or shows its section (see MarkView.Avalonia.Rendering.Blocks.HeadingFold).
public sealed class HeadingRenderer : AvaloniaObjectRenderer<HeadingBlock>, IMarkdownObjectRenderer
kind:method, kind:property, kind:ctor. Press Esc to clear.