// subject to change. Primarily intended for internal libraries
TF_CAPI_EXPORT extern void TF_ColocateWith(TF_OperationDescription* desc,
                                           TF_Operation* op);

// Call some TF_SetAttr*() function for every attr that is not
// inferred from an input and doesn't have a default value you wish to
// keep.

// `value` must point to a string of length `length` bytes.

  using tensorflow::RecordMutation;
  mutex_lock l(graph->mu);
  graph->graph.AddControlEdge(&input->node, &op->node);
  RecordMutation(graph, *op, "adding control input");
}

void TF_SetAttr(TF_Graph* graph, TF_Operation* op, const char* attr_name,
                TF_Buffer* attr_value_proto, TF_Status* status) {
  using tensorflow::RecordMutation;
  tensorflow::AttrValue attr_val;