Method is_ref

tensorflow/core/framework/op_kernel.h:543–543

  TensorValue(mutex* mu, Tensor* t) : mutex_if_ref(mu), tensor(t) {}
  Tensor* operator->() const { return tensor; }
  bool is_ref() const { return mutex_if_ref != nullptr; }

  // Return the dtype of the Tensor. For references, return the underlying type.
  DataType dtype() const {