main
ApiExplorer and OpenAPI unions support (#67001)
Support nullable array element types in parameter schemas (#68250)
Use *.dev.localhost instead of *.localhost for dev-cert & templates (#62668)
Update Microsoft.OpenApi to preview28 (#62363)
Merge feature/openapi to main (#55182)
Map [Obsolete] attribute to deprecated in OpenAPI documents (#66355)
Add OpenAPI operation and schema transformer interfaces (#56395)