in src/main/java/org/apache/sling/commons/metrics/rrd4j/impl/RRD4JReporter.java [441:448]
Set<String> getArchives() {
Set<String> archives = new HashSet<>();
for (int i = 0; i < rrdDB.getArcCount(); i++) {
Archive ar = rrdDB.getArchive(i);
archives.add(ar.toString());
}
return archives;
}