// `dst` references a node already existing in the graph being imported into.
// `src_name` is copied and has no lifetime requirements.
TF_CAPI_EXPORT extern void TF_ImportGraphDefOptionsAddInputMapping(
    TF_ImportGraphDefOptions* opts, const char* src_name, int src_index,
    TF_Output dst);

// Set any imported nodes with control input `src_name` to have that input

  TF_DeleteImportGraphDefOptions(opts);
  opts = TF_NewImportGraphDefOptions();
  TF_ImportGraphDefOptionsSetPrefix(opts, "imported");
  TF_ImportGraphDefOptionsAddInputMapping(opts, "scalar", 0, {scalar, 0});
  TF_ImportGraphDefOptionsAddInputMapping(opts, "fake", 0, {scalar, 0});

  tensorflow::GraphDef graph_def_proto;
  ASSERT_TRUE(tensorflow::ParseProtoUnlimited(&graph_def_proto, graph_def->data,

                                               unsigned char uniquify_prefix) {
  opts->opts.uniquify_prefix = uniquify_prefix;
}

void TF_ImportGraphDefOptionsAddInputMapping(TF_ImportGraphDefOptions* opts,
                                             const char* src_name,
                                             int src_index, TF_Output dst) {