code: def get_definition_properties(self, project, definition_id, filter=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 filter is not None:
              filter = ",".join(filter)
              query_parameters['filter'] = self._serialize.query('filter', filter, 'str')
          response = self._send(http_method='GET',
                                location_id='d9826ad7-2a68-46a9-a6e9-677698777895',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('object', response)
docs: GetDefinitionProperties.
          [Preview API] Gets properties for a definition.
          :param str project: Project ID or project name
          :param int definition_id: The ID of the definition.
          :param [str] filter: A comma-delimited list of properties. If specified, filters to these specific properties.
          :rtype: :class:`<object> <azure.devops.v5_0.build.models.object>`