docs: def pause(self, device):
          """ Pause the given device.
  
              Args:
                  device (str): Device ID.
  
              Returns:
                  dict: with keys ``success`` and ``error``.
          """
          resp = self.post('pause', params={'device': device},
                           return_response=True)
          error = resp.text
          if not error:
              error = None
          return {'success': resp.status_code == requests.codes.ok,
                  'error': error}