code: def search_phenotype_association_sets(self, dataset_id):
          
          request = protocol.SearchPhenotypeAssociationSetsRequest()
          request.dataset_id = dataset_id
          request.page_size = pb.int(self._page_size)
          return self._run_search_request(
              request, "phenotypeassociationsets",
              protocol.SearchPhenotypeAssociationSetsResponse)
docs: Returns an iterator over the PhenotypeAssociationSets on the server.