private static void handleWatchEvent(Path filePath, Runnable resetContext) {
    LOG.info("Attempting to reset default SSL context after receiving watch event on file {}",
      filePath);
    resetContext.run();
  }
Handler for watch events that let us know a file we may care about has changed on disk.
hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/tls/X509Util.java