Mapstruct 1.2 will detect addProperty method, if adder is prefered, will use this instead of getList().add(), this is very useful, e.g. jpa entity add children, or some builder only got adder method.

So, I suggest support addAllProperty instead of getList().addAll() or for loop addProperty, sometime, the builder can only addAllProperty, because getList() return an immutable view.

If there is a addAllProperty, it means "please use this method instead".