RPC bumpfee with an explicit feerate using `conf_target` and `estimate_mode` errors with `JSONRPCException: JSON integer out of range (-1)`.
{
    return m_examples.empty() ? m_examples : "\nExamples:\n" + m_examples;
}
bool RPCHelpMan::IsValidNumArgs(size_t num_args) const
{
    size_t num_required_args = 0;
    for (size_t n = m_args.size(); n > 0; --n) {
        if (!m_args.at(n - 1).IsOptional()) {
            num_required_args = n;
            break;
        }
    }
    return num_required_args <= num_args && num_args <= m_args.size();
}
std::vector<std::string> RPCHelpMan::GetArgNames() const
{
    std::vector<std::string> ret;
    for (const auto& arg : m_args) {
        ret.emplace_back(arg.m_names);
    }
    return ret;
}
std::string RPCHelpMan::ToString() const