Description of the problem, including code/CLI snippet

I'm not sure if this is a documentation or API bug.

type(merge_request.pipelines(order_by='created_at'))
<class 'list'>

Documentation suggests it is RESTObjectList

Getting an element in the returned list by index (pipelines()[0]) works but produces the following warning.

Class 'RESTObjectList' does not define '__getitem__', so the '[]' operator cannot be used on its instances

Specifications

• python-gitlab version: 2.6.0
• API version you are using (v3/v4): v4
• Gitlab server version (or gitlab.com): gitlab.com