I want a stateful SingleFileStorage class for treating one local aggregate calendar/contact file as a…

I want a stateful SingleFileStorage class for treating one local aggregate calendar/contact file as a…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). I need await SingleFileStorage.create collection(collection, path=...) to create the backing file and return…