code: def get_build_properties(self, project, build_id, filter=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if build_id is not None:
              route_values['buildId'] = self._serialize.url('build_id', build_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='0a6312e9-0627-49b7-8083-7d74a64849c9',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('object', response)
docs: GetBuildProperties.
          [Preview API] Gets properties for a build.
          :param str project: Project ID or project name
          :param int build_id: The ID of the build.
          :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>`