MP3 update Australia Post add-on rewrite difficult without MP dev doco

Hi Guys

The developer has just advised that her MP2.x Australia Post plugin pretty much needs a full rewrite to work with MP3.

As the code is not sufficiently commented, is there any developer documentation on how to write shipping add-ons for the new MP3?

Ultimately, I just want MP3 to work with the leading Australia Post shipping provider.

Is there any assistance that wpmudev can provide to help with this matter?