Value of ref.refresh should be used (unused_result)

[scopendo]

Hi -- I'm curious as to why the refresh method is marked as @useResult. Depending on analysis options, this triggers the unused_result lint.

I assume it's because of trying to encourage invalidate instead, but invalidating doesn't help when you want an async provider to load before showing a widget that watches it, such as when you're on one screen and want some "in progress" indication on the current screen before going to the next screen that uses that result.