AngleSharp by AngleSharp

<PackageReference Include="AngleSharp" Version="1.2.0-beta.449" />

 TokenizerMiddleware

public sealed delegate TokenizerMiddleware : MulticastDelegate
Represents the callback that is invoked when a token is consumed.
public TokenizerMiddleware(object object, IntPtr method)

public virtual IAsyncResult BeginInvoke(ref StructHtmlToken token, TokenConsumer next, AsyncCallback callback, object object)