public void info(String message, Throwable t) {
    if (infoEnabled()) {
      logger.log(Level.INFO, message, t);
    }
  }
Make logger null when the singleton (which was referred by INSTANCE) gets garbage collected.
Makes an attempt at removing associated {@link Handler}s of the {@link Logger}.
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/LogWrapper.java