docs: public void deleteExpired(Date expiration, Class entityType, String entityKey)
              throws LockingException {
          Connection conn = null;
          try {
              conn = RDBMServices.getConnection();
              primDeleteExpired(expiration, entityType, entityKey, conn);
          } catch (SQLException sqle) {
              throw new LockingException("Problem deleting expired locks", sqle);
          } finally {
              RDBMServices.releaseConnection(conn);
          }
      }