Custom Model: GetMedia "MediaCollection" returns default models, not custom

[Mestika]

Hi all,

I'm using a custom model for my Media Library and it is extending the MediaCollections Media model as a BaseModel.
This is, among others, for creating a relationship between the media files and a tags entity I have.

Between the media and labels I've a pivot table called media_tag and in both my Media model and my Tag model I've made a many-to-many relationship between them.

In Tinker, when querying the custom model directly I get the tags (\App\Models\Media::find(5)->tags will produce a collection of Tag models).

However, if I want to attach these Media models to another model called MediaLibrary and retrieve all the medias (Tinker: \App\Models\MediaLibrary::where('tenant_id', 1)->first()->getMedia('tenant_id_1')[0] it is returning me a Spatie\MediaLibrary\MediaCollections\Models\Media model and not the custom model. So getting the tags for that media \App\Models\MediaLibrary::where('tenant_id', 1)->first()->getMedia('tenant_id_1')[0]->tags will result in null.

I can of course do something like \App\Models\Media::find($media_entry_from_medialibrary->id)->tags but that seems a bit lengthy.

My question is: Making a custom model and defining it in the media library config why are this not returning a MediaCollection of the custom model?