The new `getrpcinfo` shows a list of the active commands and the duration each command has been running. This sounds like a good place to report a completion percentage for any command doing a blockchain rescan, to solve [this problem](https://bitcoin.stackexchange.com/q/83236/90721).
{
public:
    int64_t nTime;
    CPubKey vchPubKey;
    bool fInternal; 
    bool m_pre_split; 
    CKeyPool();
    CKeyPool(const CPubKey& vchPubKeyIn, bool internalIn);
    ADD_SERIALIZE_METHODS;
    template <typename Stream, typename Operation>
    inline void SerializationOp(Stream& s, Operation ser_action) {