I'm looking for "DefaultMailingAddress" property in the latest GW8 API.

Groupwise8 & later version have the "DefaultMailingAddress" property in the AddressBookEntry and i could see this property in the GW8 API under
C3PO - AddressBookEntry (VB code base) But i could not find the same property in GW8 API ("gwoapi10.h" C++ code base). Actually Im using OAPI to access the field values mapping with corresponing Field names.