code: def get_definition_tags(self, project, definition_id, revision=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if definition_id is not None:
              route_values['definitionId'] = self._serialize.url('definition_id', definition_id, 'int')
          query_parameters = {}
          if revision is not None:
              query_parameters['revision'] = self._serialize.query('revision', revision, 'int')
          response = self._send(http_method='GET',
                                location_id='cb894432-134a-4d31-a839-83beceaace4b',
                                version='5.0-preview.2',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('[str]', self._unwrap_collection(response))
docs: GetDefinitionTags.
          [Preview API] Gets the tags for a definition.
          :param str project: Project ID or project name
          :param int definition_id: The ID of the definition.
          :param int revision: The definition revision number. If not specified, uses the latest revision of the definition.
          :rtype: [str]