code: public void log(Level level, String msg, Object param1) 
      {
          if (isLoggable(level))
          {
              MyfacesLogRecord lr = new MyfacesLogRecord(level, msg);
              Object params[] = { param1};
              lr.setParameters(params);
              doLog(lr);  
          }
      }
docs: Log a message, with one object parameter.
  <p>
  If the logger is currently enabled for the given message
  level then a corresponding LogRecord is created and forwarded
  to all the registered output Handler objects.
  <p>
  @param level   One of the message level identifiers, e.g. SEVERE
  @param   msg   The string message (or a key in the message catalog)
  @param   param1    parameter to the message