def get_deleted_work_items(self, ids, project=None):
        """GetDeletedWorkItems.
        [Preview API] Gets the work items from the recycle bin, whose IDs have been specified in the parameters
        :param [int] ids: Comma separated list of IDs of the deleted work items to be returned
        :param str project: Project ID or project name
        :rtype: [WorkItemDeleteReference]
        """
        route_values = {}
        if project is not None:
            route_values['project'] = self._serialize.url('project', project, 'str')
        query_parameters = {}
        if ids is not None:
            ids = ",".join(map(str, ids))
            query_parameters['ids'] = self._serialize.query('ids', ids, 'str')
        response = self._send(http_method='GET',
                              location_id='b70d8d39-926c-465e-b927-b1bf0e5ca0e0',
                              version='5.1-preview.2',
                              route_values=route_values,
                              query_parameters=query_parameters)
        return self._deserialize('[WorkItemDeleteReference]', self._unwrap_collection(response))