code: @Override
      @Transactional(value = MillJpaRepoConfig.TRANSACTION_MANAGER_BEAN, propagation = Propagation.REQUIRES_NEW)
      public int purgeDeletedItemsBefore(Date expiration) {
          return this.manifestItemRepo.deleteFirst50000ByDeletedTrueAndModifiedBefore(expiration);
      }
docs: /* (non-Javadoc)
  @see org.duracloud.mill.manifest.ManifestStore#purgeDeletedItemsBefore(java.util.Date)