// tok must come from htmlTok
// returns all container tags found (including content) as CNC
// honors nested tags correctly
static LLS mapMethodLike findHTMLTagWithClassDeep(S className, LS tok) {
  new LLS l;
  int i = 1;
  for (i = 1; i < l(tok); i += 2) {
    if (cic(splitAtSpace_trim(tagParam(tok.get(i), "class")), className)) {
      int j = findClosingTag(tok, i);
      l.add(subList(tok, i-1, j+2));
    }
  }
  ret l;
}

Began life as a copy of #1008450