code: public static void addStandardTokens(TokenFilter filter) {
  
          // Add date/time tokens (server-local time)
          Date currentTime = new Date();
          filter.setToken(DATE_TOKEN, new SimpleDateFormat(DATE_FORMAT).format(currentTime));
          filter.setToken(TIME_TOKEN, new SimpleDateFormat(TIME_FORMAT).format(currentTime));
  
      }
docs: Adds tokens which are standardized by guacamole-ext to the given
  TokenFilter and which do not require a corresponding Credentials object.
  These the server date and time (GUAC_DATE and GUAC_TIME respectively).
  
  @param filter
  The TokenFilter to add standard tokens to.