docs: def create(self, port, qos_policy):
          """Apply QoS rules on port for the first time.
  
          :param port: port object.
          :param qos_policy: the QoS policy to be applied on port.
          """
          LOG.info("Setting QoS policy %(qos_policy)s on port %(port)s",
                   dict(qos_policy=qos_policy, port=port))
  
          policy_data = self._get_policy_values(qos_policy)
          self._utils.set_port_qos_rule(port["port_id"], policy_data)