Wrong Serializer Groups import in Symfony User documentation #8573

The Symfony User documentation uses the following import for serialization groups:

use Symfony\Component\Serializer\Annotation\Groups;

With API Platform 5.0 and Symfony 8.1, this does not work as shown in the documentation.

The correct import is:

use Symfony\Component\Serializer\Attribute\Groups;

I noticed this because debug:serializer App\Entity\User showed empty serialization groups for all properties when using Annotation\Groups.

After changing the import to Attribute\Groups and clearing the Symfony cache, the serialization groups were correctly detected and the documented user creation endpoint worked as expected.

Environment
API Platform: 5.0
Symfony: 8.1
PHP: 8.4
Expected behavior

The serialization groups shown in the documentation should be recognized when following the example with a current Symfony version.

Actual behavior

Using Symfony\Component\Serializer\Annotation\Groups results in the groups not being recognized by the serializer.

debug:serializer App\Entity\User reports:

email groups => []
plainPassword groups => []

This subsequently causes the documented POST /api/users operation to fail validation because email and plainPassword are not denormalized.

Suggested fix

Update the example to use:

use Symfony\Component\Serializer\Attribute\Groups;

The current serialization documentation already indicates that Symfony 7+ uses attributes, so the User documentation appears to be inconsistent with this.