Is serialization chunk of LionCore missing dependencies?

I am looking at https://github.com/LionWeb-io/specification/blob/main/2023.1/metametamodel/lioncore.json

```
"languages": [
    {
      "key": "LionCore-M3",
      "version": "2023.1"
    }
  ],
```

But given there are metapointers related to the builtins, I think the builtins language should be listed here too