mozilla/zamboni — comment on commit 9e57295077fdaa2e2236aeab5f4b85c1b8f6e3d4
File: apps/versions/models.py line 187
By cvan:

you're using `cached_property` on a getter. `writable` is necessary only for setters: `https://github.com/mozilla/zamboni/blob/master/apps/amo/__init__.py#L39`