code: func setEndTagRaw(tokenizer *html.Tokenizer, parent *tagElement, tagName string) string {
  	if parent != nil && parent.tagName == tagName {
  		parent.endTagRaw = string(tokenizer.Raw())
  		return ""
  	}
  	return tagName
  }
docs: // setEndTagRaw sets an endTagRaw to the parent.