OAS 3.1 adds `propertyNames` This keyword takes a Schema Object which validates against the **name** of the property. Useful links: https://json-schema.org/understanding-json-schema/reference/object.html#property-names
OAS 3.1 adds
propertyNamesThis keyword takes a Schema Object which validates against the name of the property.
Useful links:
https://json-schema.org/understanding-json-schema/reference/object.html#property-names