};

// Returns true if the node with given name has a non primary output that is
// used by some other node as an input. Returns false if no outputs are in use
// or only the first output is in use.
bool HasNonPrimaryOutputInUse(const GraphDef& graph_def,
                              const std::string& node) {
  for (const auto& node_def : graph_def.node()) {
    for (const auto& input : node_def.input()) {