What is the right approach to duplicate a group with all of its subgroups and entries?

[rtl19]

I'm trying to add the ability to my program duplicate a group with all of its children. I'm able to walk through the source group just fine, however, I'm trying to figure out the best way to 'chop off' the source group path to enable creating the same group under a new parent group. Can you give me a good approach to doing this?