code: @Override
    public CompletableFuture<Result> append(Append append) {
      return toCompletableFuture(clientWrapper.readModifyWriteRowAsync(hbaseAdapter.adapt(append)))
          .thenApply(response ->
              append.isReturnResults()
                  ? Adapters.ROW_ADAPTER.adaptResponse(response)
                  : null);
    }
docs: {@inheritDoc}