val value: Array<KClass<*>>
Specify one or more validation groups to apply to the validation step kicked off by this annotation.
JSR-303 defines validation groups as custom annotations which an application declares for the sole purpose of using them as type-safe group arguments, as implemented in org.springframework.validation.beanvalidation.SpringValidatorAdapter.
Other org.springframework.validation.SmartValidator implementations may support class arguments in other ways as well.