docs: private Deferred<byte[]> hbaseGet(final byte[] key, final byte[] family) {
      final GetRequest get = new GetRequest(table, key);
      get.family(family).qualifier(kind);
      class GetCB implements Callback<byte[], ArrayList<KeyValue>> {
        public byte[] call(final ArrayList<KeyValue> row) {
          if (row == null || row.isEmpty()) {
            return null;
          }
          return row.get(0).value();
        }
      }
      return client.get(get).addCallback(new GetCB());
    }