def make_pid_list( self, collection_pid, bdr_search_api_root ):
     """ Returns a list of pids for the given collection_pid."""
     pid_finder = PidFinder( self.logger )
     doc_list = pid_finder._run_studio_solr_query( collection_pid, bdr_search_api_root )
     bdr_pid_list = []
     for entry in doc_list:
         bdr_pid_list.append( entry['pid'] )
     bdr_pid_list = sorted( bdr_pid_list )
     print '- bdr_pid_list...'
     return bdr_pid_list