add2.node()->AddAttr("_cluster", "cluster2");
  auto out = ops::Mul(root.WithOpName("mul"), add1, add2);

  Graph graph_before_encapsulation(OpRegistry::Global());
  TF_ASSERT_OK(root.ToGraph(&graph_before_encapsulation));

  FunctionLibraryDefinition library(OpRegistry::Global(), FunctionDefLibrary());
  std::unique_ptr<Graph> graph;
  TF_ASSERT_OK(EncapsulateSubgraphsInFunctions(
      "_cluster", graph_before_encapsulation,

}

// TF_Graph functions ---------------------------------------------------------

TF_Graph::TF_Graph()
    : graph(tensorflow::OpRegistry::Global()),
      refiner(graph.versions().producer(), graph.op_registry()),
      delete_requested(false),
      parent(nullptr),
      parent_inputs(nullptr) {
  // Tell the shape refiner to also run shape inference on functions.

Status ImporterBase::AddNodesToShapeRefiner(
    std::unordered_map<string, Node*>* node_name_map) {
  shape_refiner_ =
      std::make_unique<ShapeRefiner>(graph_->versions(), graph_->op_registry());
  // Some operations (for example "TPUExecute") don't have shape inference
  // function defined, so we should set this to false for adding nodes with
  // these types of operations.

// cv : http://www.dns.cv/tldcv_portal/do?com=DS;5446457100;111;+PAGE(4000018)+K-CAT-CODIGO(RDOM)+RCNT(100); <- registration rules
cv
com.cv
edu.cv
int.cv
nome.cv
org.cv

// cw : http://www.una.cw/cw_registry/
// Confirmed by registry <******@****.***> 2013-03-26
cw
com.cw
edu.cw
net.cw
org.cw

// cx : https://en.wikipedia.org/wiki/.cx
// list of other 2nd level tlds ?
cx
gov.cx

        (IsAllowlistedFlexOp(node_def->op()) ||
         (((select_user_tf_ops_.count(node_def->op()) != 0) ||
           allow_all_select_tf_ops_) &&
          (tensorflow::OpRegistry::Global()->LookUp(node_def->op()) !=
           nullptr)));

    // Flex op case
    // Eventually, the allowlist will go away and we will rely on some TF op