example:
Pc3FIOG9vSGV4VHo4QzAyg5T1JvNnJoZ3ExaVNyQWw6WjRsanRKZG5lQk9qUE1BVQPAn optional access token to use to upload the file.example:
https://upload-las.app.box.com/api/2.0/files/content?upload_session_id=1234A URL for an upload session that can be used to upload
the file.