// src/Dto/BankDataDto.php
namespace App\Dto;

use App\Api\BankDataResource;
use Symfony\Component\ObjectMapper\Attribute\Map;

#[Map(target: BankDataResource::class)]
class BankDataDto
{
    public string $iban;
    public BankDto $bank;
}

// src/Dto/BankDto.php
namespace App\Dto;

use App\Api\BankDataResource;
use Symfony\Component\ObjectMapper\Attribute\Map;

#[Map(target: BankDataResource::class)]
class BankDto
{
    #[Map(target: 'bic')]
    public string $bic;

    #[Map(target: 'bankCode')]
    public string $code;

    #[Map(target: 'bankName')]
    public string $name;
}

// src/Entity/BankDataResource.php
namespace App\Api;

class BankDataResource
{
    public string $iban;
    public string $bic;
    public string $bankCode;
    public string $bankName;
}

$bankDto = new BankDto();
$bankDto->bic = 'BIC123';
$bankDto->code = 'BANK001';
$bankDto->name = 'Test Bank';

$dto = new BankDataDto();
$dto->iban = 'IBAN12345';
$dto->bank = $bankDto;

$mapper = new ObjectMapper();
$resource = $mapper->map($dto, BankDataResource::class);

// $resource->iban === 'IBAN12345'
// $resource->bic === 'BIC123' (mapped from the nested BankDto)
// $resource->bankCode === 'BANK001'
// $resource->bankName === 'Test Bank'