code: def get_event_type(self, publisher_id, event_type_id):
          
          route_values = {}
          if publisher_id is not None:
              route_values['publisherId'] = self._serialize.url('publisher_id', publisher_id, 'str')
          if event_type_id is not None:
              route_values['eventTypeId'] = self._serialize.url('event_type_id', event_type_id, 'str')
          response = self._send(http_method='GET',
                                location_id='db4777cd-8e08-4a84-8ba3-c974ea033718',
                                version='5.0',
                                route_values=route_values)
          return self._deserialize('EventTypeDescriptor', response)
docs: GetEventType.
          Get a specific event type.
          :param str publisher_id: ID for a publisher.
          :param str event_type_id:
          :rtype: :class:`<EventTypeDescriptor> <azure.devops.v5_0.service_hooks.models.EventTypeDescriptor>`