Access a storage ID


In v3 it was possible to access the id of a storage, as in :


```typescript
const storage = new MMKV({id: 'someID'})

storage.id  => 'simeID'
```

Is there any possibility to do so in v4? Since the `id` property is not present anymore. 
Also, as far as I can tell, the `name` prop of a storage is always "MMKV". Maybe the id could be part of the name?

