'Get a QoS policy.
:param context: neutron api request context
:type context: neutron.context.Context
:param policy_id: the id of the QosPolicy to update
:type policy_id: str uuid
:returns: a QosPolicy object'

@db_base_plugin_common.filter_fields
@db_base_plugin_common.convert_result_to_dict
def get_policy(self, context, policy_id, fields=None):

    return self._get_policy_obj(context, policy_id)
