agtype to jsonb conversion

Hello, everyone.

I'd like to have an agtype to jsonb conversion, so I would be able to write less complicated sql or use Postgresql drivers.
It was mentioned in docs that agtype is quite close to jsonb, so would such conversion be fast enough for large objects?

Start by reviewing the documentation's statement that agtype is close to PostgreSQL jsonb, then examine how agtype and jsonb are represented and exposed to PostgreSQL drivers. Done means defining a conversion approach and establishing whether it performs adequately for large objects.

Written by the indexing model from the issue text.