in src/main/java/org/apache/sling/jcr/maintenance/internal/RevisionCleanupScheduler.java [52:59]
public void run() {
if (!RepositoryManagementUtil.isRunning(repositoryManager.getRevisionGCStatus())) {
log.info("Starting Revision Garbage Collection");
repositoryManager.startRevisionGC();
} else {
log.warn("Revision Garbage Collection already running!");
}
}