#
# import popcorn
# import popcorn::pop_repos
+# import popcorn::pop_json
#
# # Serializable book representation.
# class Book
# serialize
-# super Jsonable
#
# # Book uniq ID
# var id: String = (new MongoObjectId).id is serialize_as "_id"
# ~~~
# import popcorn
# import popcorn::pop_repos
+# import popcorn::pop_json
#
# # First, let's create a User abstraction:
#
# end
# ~~~
abstract class RepoObject
- super Jsonable
serialize
# `self` unique id.