Use file attachments override for the user file attachments resource.
Review Request #8822 — Created March 16, 2017 and submitted
FileAttachmentListResourcehas a helper that makes it very
easy to upload files using the Python API. This override was used for the main
file attachments list endpoint, but wasn't for the user file attachments list.
This change updates it to use that helper for both.
Used this from Review Bot.
Can you update the description to explain why this change is needed? What it allows for? It's not really clear.