public Boolean hDel(byte[] key, byte[] field) {
   try {
     if (isPipelined()) {
       pipeline(pipeline.hdel(key, new Object[] {field}));
       return null;
     }
     return client.hdel(key, new Object[] {field}).data() == 1;
   } catch (Exception ex) {
     throw convertSrpAccessException(ex);
   }
 }