def validate!
      if self.class.json_schema
        self.class.validator.instance_variable_set('@errors', [])
        self.class.validator.instance_variable_set('@data', stringify_keys(to_h(persist: true)))
        self.class.validator.validate
        true
      end
    end
def validate!
      if self.class.json_schema
        self.class.validator.instance_variable_set('@errors', [])
        self.class.validator.instance_variable_set('@data', stringify_keys(to_h(persist: true)))
        self.class.validator.validate
        true
      end
    end
Validates the object against the schema.

 @raises [JSON::Schema::ValidationError] if the object is invalid