code: public Logger getLogger(final String loggerName,
                            final LoggerFactory factory) {
      return repo.getLogger(loggerName, factory);
    }
docs: Return a new logger instance named as the first parameter using
  <code>factory</code>.
  
  <p>If a logger of that name already exists, then it will be
  returned.  Otherwise, a new logger will be instantiated by the
  <code>factory</code> parameter and linked with its existing
  ancestors as well as children.
  
  @param loggerName The name of the logger to retrieve.
  @param factory The factory that will make the new logger instance.
  @return logger