https://travis-ci.org/github/bitcoin/bitcoin/jobs/680452476#L6107
{
    return RPCHelpMan{"keypoolrefill",
                "\nFills the keypool."+
        HELP_REQUIRING_PASSPHRASE,
                {
                    {"newsize", RPCArg::Type::NUM,  "100", "The new keypool size"},
                },
                RPCResult{RPCResult::Type::NONE, "", ""},