roots     []uint32          // list of root nodes (forest)
	noneq     map[uint32]bitset // non-equal relations
	undo      []posetUndo       // undo chain
}

func newPoset() *poset {
	return &poset{
		values:    make(map[ID]uint32),
		constants: make(map[int64]uint32, 8),
		nodes:     make([]posetNode, 1, 16),
		roots:     make([]uint32, 0, 4),
		noneq:     make(map[uint32]bitset),
		undo:      make([]posetUndo, 0, 4),

namespace libtf {
namespace impl {
/// @brief The Singleton `None` class.
///
/// This class is not user-constructible. To create a `None` instance, use
/// None::GetInstance().

class None final {
 public:
  /// Retrieves the `None` instance.
  ///
  /// @return Returns the `None` singleton.
  static None& GetInstance();

  /// Equality operator.
  bool operator==(const None& other) const { return true; }

# To test in real cluster:
# kubectl create ns none
# kubectl label namespace none istio-injection=enabled

# All configs for 'none' namespace, used to test interception without iptables.
# In this mode the namespace isolation is required - the tests will also verify isolation
# It is important to update the tests in ../envoy/v2 which verify the number of generated listeners.

limitations under the License.
==============================================================================*/
#include "tensorflow/cc/experimental/libtf/impl/none.h"

namespace tf {
namespace libtf {
namespace impl {

None& None::GetInstance() {
  static None* none_inst = new None();
  return *none_inst;
}

}  // namespace impl
}  // namespace libtf

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