@Target(value={METHOD,FIELD,ANNOTATION_TYPE,CONSTRUCTOR,PARAMETER,TYPE_USE})
 @Retention(value=RUNTIME)
 @Repeatable(value=Digits.List.class)
 @Documented
 @Constraint(validatedBy={})
public @interface Digits
Supported types are:
BigDecimalBigIntegerCharSequencebyte, short, int, long, and their respective
     wrapper types
 null elements are considered valid.
public abstract int integer
public abstract int fraction
public abstract java.lang.String message
public abstract java.lang.Class<? extends Payload>[] payload