TF_Operation** control_outputs,
                                  int max_control_outputs) {
  int count = 0;
  for (const auto* edge : oper->node.out_edges()) {
    if (edge->IsControlEdge() && !edge->dst()->IsSink()) {
      if (count < max_control_outputs) {
        control_outputs[count] = ToOperation(edge->dst());
      }
      ++count;
    }
  }