docs: def set_phy_mode(self, mode=IxePhyMode.ignore):
          """ Set phy mode to copper or fiber.
          :param mode: requested PHY mode.
          """
          if isinstance(mode, IxePhyMode):
              if mode.value:
                  self.api.call_rc('port setPhyMode {} {}'.format(mode.value, self.uri))
          else:
              self.api.call_rc('port setPhyMode {} {}'.format(mode, self.uri))