@mixin breaks Doctrine Annotations parsing

[Ruud Kamphuis]

After upgrading from 1.8.0 to 1.9.1 I'm getting an error with JMS Serializer:

  [Doctrine\Common\Annotations\AnnotationException]
  [Semantical Error] The annotation "@mixin" in class Webmozart\Assert\Assert was never imported. Did you maybe forget to add a "use" statement for this annotation?

This seems to originate from PR #126

I found 2 issues at Doctrine Annotations that explain that they cannot fix this:
doctrine/annotations#293
doctrine/annotations#154

[Ivan Kurnosov]

Out of curiosity - what do you serialise?

[Ruud Kamphuis]

Nothing, it happens during cache warmup where JMS Serializer scans some annotations.

So the issue comes from JMS using Doctrine Annotations that trips on this mixin annotation.

[Ivan Kurnosov]

What platform/framework do you use? Is it symfony?

[Ruud Kamphuis]

These are my dependencies:

doctrine/annotations                             1.11.1
jms/metadata                                     2.4.0
jms/serializer                                   3.10.0 
jms/serializer-bundle                            3.7.0
webmozart/assert                                 1.9.1
symfony/*                                        v5.2.0

[Tobias Nyholm]

The @mixin annotation is removed in 1.10.0. We use a real trait instead.

Can you confirm this issue is resolved?

[Ruud Kamphuis]

I'm not sure where I experienced this problem. I see that our projects already use 1.9.0 so I expect the problem was fixed in another way. Sorry for not being able to provide more info. Thanks for fixing it anyway :)