Defines the target(s) a ConstraintValidator can validate.

A ConstraintValidator can target the (returned) element annotated by the constraint, the array of parameters of a method or constructor (aka cross-parameter) or both.

If @SupportedValidationTarget is not present, the ConstraintValidator targets the (returned) element annotated by the constraint.

A ConstraintValidator targeting cross-parameter must accept Object[] (or Object) as the type of object it validates.