public override void ExitHtmlDocument(HTMLParser.HtmlDocumentContext ctx)
{
var textContent = new StringBuilder();
foreach(var elemsCtx in ctx.htmlElements()){
var markup = MyTreeProperty.Get(elemsCtx);
if(string.IsNullOrEmpty(markup)){
continue;
}
textContent.Append(markup);
}
_results.HtmlOnly = textContent.ToString();
}