Fields
- Draft3 Draft 3. Schema URI http://json-schema.org/draft-03/schema#.
- Draft4 Draft 4. Schema URI http://json-schema.org/draft-04/schema#.
- Draft6 Draft 6. Schema URI http://json-schema.org/draft-06/schema#.
- Draft7 Draft 7. Schema URI http://json-schema.org/draft-07/schema#.
- Unset Version has not been set.