How to eager load a many-to-many relation?

[bertheyman]

I've a many-to-many relation set up. I've tried two approaches to work with eager loading, but can't figure it out.

1. This approach works, but not sure how I can apply eager loading for this:

craft.entries.section('relatedSection').relatedTo(entry).all()
// Result ok but doesn't pair with eager loading

2. But have trouble with this one, while this might support eager loading:

entry.relatedSectionFieldName
// Result empty

For the regular relation, this last approach does work.