- Remove attribute 'content_type' of <storage_type>: was never used
- Make attribute 'model' of <storage_type> optional: for future usage
- Remove Bconnection model property: was never (in)validated. Replaced by
- Remove attribute 'content_type' of <storage_type>: was never used
- Make attribute 'model' of <storage_type> optional: for future usage
- Remove Bconnection model property: was never (in)validated. Replaced by