code: public boolean setDoNotDisturb(VacuumDoNotDisturb dnd) throws CommandExecutionException {
          if (dnd == null) throw new CommandExecutionException(CommandExecutionException.Error.INVALID_PARAMETERS);
          return sendOk("set_dnd_timer", dnd.construct());
      }
docs: Set the do not disturb timer.
  @param dnd The new settings to set.
  @return True if the command was received successfully.
  @throws CommandExecutionException When there has been a error during the communication or the response was invalid.