@Entity
public class TestEntity {
    @Id
    private String id;

    @MySize
    private byte[] bytes;

    @Target({FIELD, TYPE_USE})
    @Retention(RUNTIME)
    @Constraint(validatedBy = {})
    @Size(max = 16)
    public @interface MySize {
        String message() default "{javax.validation.constraints.Size.message}";

        Class<?>[] groups() default {};

        Class<? extends Payload>[] payload() default {};
    }
}

@Generated(value = "org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor")
@StaticMetamodel(TestEntity.class)
public abstract class TestEntity_ {

	public static volatile SingularAttribute<TestEntity, MySize :: byte)[]> bytes;
	public static volatile SingularAttribute<TestEntity, String> id;

}