[Ryuuke5]

Yup, nice catch, no need to reset it to nil if you wanna keep it in memory indefinitely.

I guess making it nil can be also used if you don't wanna make the same request when there is one already in flight, in case you have a 403 error and need to request a refresh token, you don't wanna make two simultaneous requests, but you also don't wanna catch it indefinitely either.