public ClientDTO addAccountToClient(String clientId, AccountDTO accountDto) throws Exception {
        Client client = clientRepository.findById(clientId).orElse(null);
        if (client == null) {
            throw new NotFoundException("Could not find client with that ID.");
        }
        Date now = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
        String currentDate = sdf.format(now);
        Account acc = new Account(1,accountDto.getAccountType(),currentDate,
                accountDto.getBalance());
        client.getAccountList().add(acc);
        //activityService.addNewActivity("Add account"+accountDto.getAccountId()+" to client id: "+clientId);
        clientRepository.save(client);
        return ClientConverter.toDto(client);
    }