API for returning the latest version with valid documentation

[isoos]

From the authors of Dash:

"The API I'm using to get package versions is listing versions for which the docs don't exist.

For example, https://pub.dartlang.org/api/packages/source_gen shows 0.7.6 as the latest version, but https://www.dartdocs.org/documentation/source_gen/0.7.6/index.html doesn't exist.

The latest version to have docs is https://www.dartdocs.org/documentation/source_gen/0.7.4+3/index.html.

Could the API have a key that shows whether or not the version has docs, so I can ignore versions without docs?"

[isoos]

This needs a bit of refactoring in pub_server to override the required method (with async signature).