Scope WithDevice(const string& device) const;

  /// Returns a new scope.  All ops created within the returned scope will have
  /// their assigned device set to `assigned_device`.
  Scope WithAssignedDevice(const string& assigned_device) const;

  /// Returns a new scope.  All ops created within the returned scope will have
  /// their _XlaCluster attribute set to `xla_cluster`.

                        /* clear_control_deps */ true));
}

Scope Scope::WithDevice(const string& device) const {
  return Scope(new Impl(*this, Impl::Tags::Device(), device));
}

Scope Scope::WithAssignedDevice(const string& assigned_device) const {
  return Scope(new Impl(*this, Impl::Tags::AssignedDevice(), assigned_device));
}

Scope Scope::WithXlaCluster(const string& xla_cluster) const {