// Copyright (c) 2021 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #include #include namespace interfaces { namespace { class EchoImpl : public Echo { public: std::string echo(const std::string& echo) override { return echo; } }; } // namespace std::unique_ptr MakeEcho() { return std::make_unique(); } } // namespace interfaces