LSP-feature: autocomplete available generics for which the type registered a method.

[ltuijnder]

It would be super cool if in the future lsp could auto complete the available methods that are registered for a given type if one types the object name and then a pipe operator.

Eg. from the S3 method example: https://vapour.run/docs/example-s3. It would be super cool if I type:

let john: user = create_user() |>

Then a menu pops up with a list of the available methods for type user. Eg. here set_id and set_name

This feature would then give a similar experience as encapsulated OOP frameworks where typing the access operator on an object (like . in python classes) would give a list of available properties/methods for said object.

For me this would also solve one of the fundamental issues that I have with S3. Namely that I have to know the available generics for a given class off the top of my head.

(ps. I know that currently the lsp does not have an autocomplete feature. But once we get there it would be cool if the above described functionality is also added :) )