static void deleteOldApplicationDirectories() {
    PropertiesComponent propertyService = PropertiesComponent.getInstance();
    if (ConfigImportHelper.isConfigImported()) {
      long scheduledAt = System.currentTimeMillis() + TimeUnit.DAYS.toMillis(OLD_DIRECTORIES_SCAN_DELAY_DAYS);
      LOG.info("scheduling old directories scan after " + DateFormatUtil.formatDateTime(scheduledAt));
      propertyService.setValue(OLD_DIRECTORIES_SCAN_SCHEDULED, Long.toString(scheduledAt));
      OldDirectoryCleaner.Stats.scheduled();
    }
    else {
      long scheduledAt = propertyService.getLong(OLD_DIRECTORIES_SCAN_SCHEDULED, 0L), now;
      if (scheduledAt != 0 && (now = System.currentTimeMillis()) >= scheduledAt) {
        OldDirectoryCleaner.Stats.started((int)TimeUnit.MILLISECONDS.toDays(now - scheduledAt) + OLD_DIRECTORIES_SCAN_DELAY_DAYS);
        LOG.info("starting old directories scan");
        long expireAfter = now - TimeUnit.DAYS.toMillis(OLD_DIRECTORIES_SHELF_LIFE_DAYS);

        new OldDirectoryCleaner(expireAfter).seekAndDestroy(null, null);
        propertyService.unsetValue(OLD_DIRECTORIES_SCAN_SCHEDULED);
        LOG.info("old directories scan complete");
      }
    }
  }
static void deleteOldApplicationDirectories()