To be honest, I think this is a flaw in the JavaBean spec - when they introduced autoboxing in Java 5, they should have allowed the `is...` form for a getter of type `Boolean`.

And I really want to use `BeanUtils` to copy the properties.

I was going to change the type to boolean, but then we can't support `setDeliveryTagIfAbsent()`

My vote is to just keep both and not deprecate the `is...`.