You can search for identifiers within the package.
in-package search v0.2.0
oxbow.river
Window_management.Server
module S : sig ... end
class virtual +'a decoration : object ... end
class virtual +'a node : object ... end
class virtual +'a output : object ... end
class virtual +'a pointer_binding : object ... end
class virtual +'a seat : object ... end
class virtual +'a shell_surface : object ... end
class virtual +'a window : object ... end
class virtual +'a t : object ... end