- Add the ability to fill-up the fields of the Item in the event context.
- Use Item schema in the Instance schema
- Implement the Writer interface
- Write fields marked as "Map allowed" https://docs.google.com/spreadsheets/d/17kCccovBR-RAVK-coW7fpXvJfaRmYA2mUHoVLSF9Spo/edit#gid=311320731
- Cover with tests
- ItemWriter class that fills up fields of the Item in Inventory instance