echo.h

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// Copyright (c) 2021-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_INTERFACES_ECHO_H
#define BITCOIN_INTERFACES_ECHO_H
 
#include <memory>
#include <string>
 
namespace interfaces {
class Echo
{
public:
    virtual ~Echo() = default;

    virtual std::string echo(const std::string& echo) = 0;
};

std::unique_ptr<Echo> MakeEcho();
} // namespace interfaces
 
#endif // BITCOIN_INTERFACES_ECHO_H