message: Fix propagation of objects with same defs.
diff: @@ -136,10 +136,6 @@ class DefaultTensorTie : public TensorTie {
  if (!IsValid(def().external_def, obj)) {
  return absl::InvalidArgumentError("Given object is not valid");
  }
  - // TODO(akulik): external object should propagate to internal.
  - if (IsSameDef()) {
  - return absl::UnimplementedError("Not supported");
  - }
  external_obj_ = obj;
  return absl::OkStatus();
  }
  