For what purpose?

If that's related to the ordering, here is my reasoning. The TestNG like feature does not keep around the fact that prop1 and before prop2 in the properties list.
My recollection of the ORM engine is that this ordering does matter one way or the other (same column order?). If I am wrong and that the order does not matter, then I like the TestNG approach (it makes things a bit difficult to read when you have hierarchy of classes but that's probably acceptable.