Use case

Developers wanting to optimize their scrolling lists will probably find SliverFixedExtentList quite easily.

However, if their use case turns out to require varied extents, they won't know about SliverVariedExtentList
because there is no breadcrumb to https://api.flutter.dev/flutter/widgets/SliverVariedExtentList-class.html from the docs in https://api.flutter.dev/flutter/widgets/SliverFixedExtentList-class.html

The opposite is already the case, though.

Proposal

Add a breadcrumb in the documentation for SliverFixedExtentList towards SliverVariedExtentList, similar to how SliverVariedExtentList links back to its sibling widget.

Note: We might want to fix #138912 first, before adding a link?