absl::Span<AbstractTensorHandle*> grad_inputs) override {
    for (int i = 0; i < grad_outputs.size(); i++) {
      auto grad_input = grad_outputs[i];
      // TODO(srbs): Should we add a copy contructor to AbstractTensorHandle
      // that takes care of this similar to `Tensor`?
      if (grad_input) {
        grad_input->Ref();
      }
      grad_inputs[i] = grad_input;
    }
    return absl::OkStatus();
  }

 * <code>java.io.File</code> usage; a '/' at the beginning of the second
 * parameter will still use the server component of the first parameter. The
 * examples below illustrate the resulting URLs when this second contructor
 * argument is used.
 *
 * <p><table border="1" cellpadding="3" cellspacing="0" width="100%">
 * <tr bgcolor="#ccccff">
 * <td colspan="3">

computer.museum computerhistory.museum comsec comunicações.museum condos conf.au conf.lv conf.se conference.aero conn.uk construction consulado.st consultant.aero consulting consulting.aero contact contagem.br contemporary.museum contemporaryart.museum contractors control.aero convent.museum cooking cookingchannel cool coolblog.jp coop coop.ar coop.br coop.ht coop.in coop.km coop.mv coop.mw coop.py coop.rw coop.tt cooperativa.bo copenhagen.museum copro.uk corporation.museum correios-e-telecomunicações.museum...

// construction : 2013-09-16 Binky Moon, LLC
construction

// consulting : 2013-12-05 Dog Beach, LLC
consulting

// contact : 2015-01-08 Dog Beach, LLC
contact

// contractors : 2013-09-10 Binky Moon, LLC
contractors

// cooking : 2013-11-21 Registry Services, LLC
cooking

// cookingchannel : 2015-07-02 Lifestyle Domain Holdings, Inc.
cookingchannel