https://travis-ci.org/github/MarcoFalke/btc_nightly/jobs/680655419#L412
: pwallet(pwallet)
      , type(type) { }
    ReserveDestination(const ReserveDestination&) = delete;
    ReserveDestination& operator=(const ReserveDestination&) = delete;
    
    ~ReserveDestination()
    {
        ReturnDestination();
    }
    
    bool GetReservedDestination(CTxDestination& pubkey, bool internal);
    
    void ReturnDestination();
    
    void KeepDestination();
};
class CAddressBookData