upload_session/finish_batch

[upload_session/finish_batch](https://www.dropbox.com/developers/documentation/http/documentation#files-upload_session-finish_batch) scope: `files.content.write` This route helps you commit many files at once into a user's Dropbox. Use `upload_session/start` and `upload_session/append:2` to upload file contents. We recommend uploading many files in parallel to increase throughput. Once the file contents have been uploaded, rather than calling `upload_session/finish`, use this route to finis...