Function CheckNodeExists

tensorflow/core/grappler/mutable_graph_view.cc:308–314

}

Status CheckNodeExists(absl::string_view node_name, NodeDef* node,
                       ErrorHandler handler) {
  if (node == nullptr) {
    return handler(NodeMissingErrorMsg(node_name));
  }
  return Status::OK();
}

Status CheckPortRange(int port, int min, int max, ErrorHandler handler) {
  if (port < min || port > max) {