Does get_permissions() overrides @action(permission_classes=[...]) ?

[FMZPNP]

Hello, I have the following issue in a ViewSet. It's just an example but it is accurate at what I have.

class PostViewSet(ModelViewSet):
    queryset = Post.objects.all()
    serializer_class = PostSerializer
     
    def get_permissions(self):
        if self.action in ['destroy']:
            permission_classes = [DjangoModelPermissions]
        else:
              permission_classes = [IsAuthenticated]

       return [permission() for permission in permission_classes]

    @action(detail=False, methods=['post'], permission_classes = [IsAdminUser])
    def set_categories(self, request):
              ....

I have it in that way because we're thinking to set the permission policy per standard action (create, update, partial_update, destroy, list, retrieve) with the get_permissions method. And later be more specific in some actions, setting the permission policy in the decorator itself.

When I debug, my action has the correct permission_classes: IsAdminUser; but in reality it is taking only the remaining permission on the get_permission method: ÌsAuthenticated

In the docs it says that the decorator @action(permission_classes=...) overrides the ViewSet attribute, but it doesn't say anything about the method get_permissions.