toco::TocoConversionLog toco_log_before;
  PopulateConversionLog(*imported_model, &toco_log_before);
  std::ofstream osstream_before(toco_flags->conversion_summary_dir() +
                                "/toco_log_before.pb");
  toco_log_before.SerializeToOstream(&osstream_before);
  osstream_before.close();
  toco::LogDump(toco::kLogLevelModelChanged, "tf_graph", *imported_model);