sclass AssistantRequest {
  Map map; // full map of parameters
  S token, language;
  S input, event; // one of these will be not empty
  O module;
  
  void say(S s) {
    if (emptyAfterTrim(s)) ret;
    print("Sending to " + shortenedToken() + ": " + s);
    dm_call(module, 'sendToUser, token, s);
  }
  
  S shortenedToken() { ret takeFirst(token, 8) + "..."; }
}