code: public void debug(Object message, Throwable t) {
          if (repository.isDisabled(Level.DEBUG_INT))
              return;
          if (Level.DEBUG.isGreaterOrEqual(this.getEffectiveLevel()))
              forcedLog(FQCN, Level.DEBUG, message, t);
      }
docs: Log a message object with the <code>DEBUG</code> level including the stack trace of the {@link Throwable} <code>t</code> passed as
  parameter.
  
  <p>
  See {@link #debug(Object)} form for more detailed information.
  
  @param message the message object to log.
  @param t the exception to log, including its stack trace.