public void incrementReplicationErrors(boolean sslEnabled) {
    replicationErrors.inc();
    if (sslEnabled) {
      sslReplicationErrors.inc();
    } else {
      plainTextReplicationErrors.inc();
    }
  }
This is not used anywhere.
@param sslEnabled
ambry-replication/src/main/java/com/github/ambry/replication/ReplicationMetrics.java