Method FromString

src/script/descriptor.cpp:2271–2279

    }

    std::optional<Key> FromString(std::span<const char>& in) const
    {
        assert(m_out);
        Key key = m_keys.size();
        auto pk = ParsePubkey(m_expr_index, in, ParseContext(), *m_out, m_key_parsing_error);
        if (pk.empty()) return {};
        m_keys.emplace_back(std::move(pk));
        return key;
    }

    std::optional<std::string> ToString(const Key& key, bool&) const
    {