public DomainList<BeneficiaryDomain> getBeneficiariesByArrangement(
ArrangementDomain arrangement, Integer pageIndex, Integer pageSize) {
Pageable pageable = new PageRequest(pageIndex, pageSize);
Page<BeneficiaryDomain> page = beneficiaryRepository.findByArrangement(arrangement, pageable);
return new DomainList<BeneficiaryDomain>(page.getContent(), (int) page.getTotalElements());
}
