code: public void trace(String loggerFqcn, Object message, Object[] params, Throwable t) {
          doLog(Level.TRACE, loggerFqcn, message, params, t);
      }
docs: Issue a log message with parameters and a throwable with a level of TRACE.
  
  @param loggerFqcn the logger class name
  @param message the message
  @param params the message parameters
  @param t the throwable