Method ToString

src/net_processing.cpp:954–960

            : m_txns{parent, child}, m_senders{parent_sender, child_sender} {}

        std::string ToString() const {
            Assume(m_txns.size() == 2);
            return strprintf(
                "parent %s (sender=%d) + child %s (sender=%d)",
                m_txns.front()->GetId().ToString(), m_senders.front(),
                m_txns.back()->GetId().ToString(), m_senders.back());
        }
    };

    /**