Abort an upload session and discard all data uploaded.
This cannot be reversed.
A blank response is returned if the session was successfully aborted.
An unexpected client error.
curl -X DELETE https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD \
-H 'Authorization: Bearer <ACCESS_TOKEN>'
session.abort();
client.upload_session('11493C07ED3EABB6E59874D3A1EF3581').abort()
print('Upload was successfully canceled')
// Cancel upload session 93D9A837B45F
client.files.abortUploadSession('93D9A837B45F', callback);