sclass WebChatBotMsg {
  S fullHTML;
  bool fromUser;
  S msgHTML;
}

static L<WebChatBotMsg> webBotTester_extractMsgs(S html) {
  new L<WebChatBotMsg> out;
  LLS msgs = findContainerTagWithClass(htmlTok(html), "span", "chat_msg_item");
  for (LS tokMsg : msgs) {
    new WebChatBotMsg msg;
    msg.fullHTML = trimJoin(tokMsg);
    tokMsg = dropFirstTwoAndLastTwo(tokMsg);
    for (LS srSpan : findContainerTagWithClass(tokMsg, "span", "sr-only"))
      setAllToEmptyString(dropFirstAndLast2(srSpan));
    msg.fromUser = false;
    msg.msgHTML = trimJoin(tokMsg);
    out.add(msg);
  }
  ret out;
}