Lazy init recordRef by calling self.recordRef which is overridden by classes that inherit from AKRekord. This speeds up address book initialization.
Do not init recordRef during init, but rather override AKRekord's recordRef getter to delay init of recordRef
Do not init recordRef during init, but rather override recordRef getter of super to delay init of recordRef
Do not init super.recordRef during init, but rather override recordRef getter of super to defer init of recordRef until it is needed
Speed up address book loading by not passing/using _addressBookRef during the initialization AKRecord instances