class BlockchainEventServiceImpl implements BlockchainEventService {

    @Override
    public Optional<BlockchainEventDto> findOne(final Long id) {
        return mapper.mapToOptional(blockchainEventRepo.findOne(id).orElse(null));
    }

    public  BlockchainEventServiceImpl(final BlockchainEventRepository blockchainEventRepo, final BlockchainEventDtoMapper mapper);

}