code: def get_event_type(self, event_type):
          
          route_values = {}
          if event_type is not None:
              route_values['eventType'] = self._serialize.url('event_type', event_type, 'str')
          response = self._send(http_method='GET',
                                location_id='cc84fb5f-6247-4c7a-aeae-e5a3c3fddb21',
                                version='5.0-preview.1',
                                route_values=route_values)
          return self._deserialize('NotificationEventType', response)
docs: GetEventType.
          [Preview API] Get a specific event type.
          :param str event_type:
          :rtype: :class:`<NotificationEventType> <azure.devops.v5_0.notification.models.NotificationEventType>`