Add a converter on getting the file buffer from Apps-Engine.
Add a converter on getting the file buffer from Apps-Engine.

Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,VoiSmart/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat,VoiSmart/Rocket.Chat,subesokun/Rocket.Chat,VoiSmart/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat