DartDocResolvedLibrary class Null safety
Contains the ResolvedLibraryResult and any additional information about
the library coming from
Prefer to populate this class with more information rather than passing
AnalysisDriver or AnalysisSession down to PackageGraph. The graph
object is reachable by many DartDoc model objects and there's no guarantee
that there's a valid
AnalysisDriver in every environment dartdoc runs.