https://stackoverflow.com/questions/50748066/migrating-from-old-dropbox-sdk
Basically, I am surprised that the new SDK looks nothing like the old one, and want to make sure I am not missing something. I use a small subset of Dropbox, have done so for years troublefree, and don't want to introduce bugs by going the long way. The new SDK seems to be very different, and I don't understand why the interface couldn't have been kept similar, with only the back-end API changing.