Currently, to read/write files from/to object storage in a DSX notebook, a user must use an "Insert to code" button for a file shown in a GUI. This button will paste a large amount of credential code into the notebook. Unfortunately, this approach is confusing to the end user. It would be cleaner to be able to simply use file paths, and have all other credentials handled automatically. One possibility would be to store credentials in environment variables that could be implicitly used by the object storage API.