code: def extend(validator_cls):
      
  
      Validator = jsonschema.validators.extend(
          validator_cls, {
              "properties": _properties_with_defaults(validator_cls),
          }
      )
  
      class Blueprinter(Validator):
          def instantiate(self, data):
              self.validate(data)
              return data
  
      return Blueprinter
docs: Extend the given :class:`jsonschema.IValidator` with the Seep layer.