Is there a straightforward way to create a butler that points to an in-memory mocked data? It would be very useful for tests of code that retrieves data from a butler.
If this is something that does not yet exist, I would like to request it for the new butler.
I can see two desired modes:
- Populate some data in advance
- Allow a callback function to retrieve other data (e.g. large images) when it is requested, so that code can generate it on the fly to avoid running out of memory