1. Create an Azure Cloud Storage blobstore in the UI
2. Fill in the required fields and under Authentication, try to select "Use Environment Variables". You cannot.
3. Try to Save the form with no Authentication methods selected. The UI displays an popup error repeatedly with the text "must not be null".
4. Check the nexus.log after clicking "Save". You see messages such as these which not helpful:
User should be able to configure Authentication to Azure with environment variables.
Allow choosing this option in the UI without error.