[serializer] allowed_extra_attributes doesn't throw Exception like docs says #27036
Description
| Q | A |
|---|---|
| Bug report? | yes |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 4.X |
Hello I think I find a bug in serializer of Symfony
I follow the docs of serializer in SF4
If you reproduce the second example with 'allow_extra_attributes => false' it's not work.
Test of allowed_extra_attributes didn't cover this.