static void postToChatNamed(S chatName, S text) {
  if (empty(chatName)) ret;
  if (eqic(chatName, "Stefan's Chat"))
    postToStefansChat(text);
  else if (eqic(chatName, "Smart Bot's Chat"))
    postToSmartBotsChat(text);
  else
    warn("Unknown chat name: " + chatName);
}