@Test
public void adaptResponse_emptyRow() {

  FlatRow row = FlatRow.newBuilder().withRowKey(ByteString.copyFromUtf8("key")).build();
  Result result = instance.adaptResponse(row);
  assertEquals(0, result.rawCells().length);
  // The rowKey is defined based on the cells, and in this case there are no cells, so there isn't
  // a key.
  assertNull(transformToFlatRow(result));
}