If enum class from dependencies is used, which was compiled by a new version of the plugin, which uses a factory and does not create a nested `$serializer` class, then an `SERIALIZER_NOT_FOUND` diagnostic error is thrown for such an enumeration.
This happens if the old serialization runtime is used for the current project - in this case, the serializer is taken from the nested class `$serializer`. Since it is missing, the diagnostics does not work correctly.
It is acceptable for enumerations to ignore this error, because we know that enumerations are always serializable.
Merge-request: KT-MR-8818
Merged-by: Sergey Shanshin <Sergey.Shanshin@jetbrains.com>
Sergey.Shanshin
498c1abbc6