public Set<byte[]> sInter(byte[]... keys) {
   try {
     if (isPipelined()) {
       pipeline(pipeline.sinter((Object[]) keys));
       return null;
     }
     return SrpUtils.toSet(client.sinter((Object[]) keys).data());
   } catch (Exception ex) {
     throw convertSrpAccessException(ex);
   }
 }