Squashed 'src/ipc/libmultiprocess/' content from commit 35944ffd23fa

git-subtree-dir: src/ipc/libmultiprocess
git-subtree-split: 35944ffd23fa26652b82210351d50e896ce16c8f

example/printer.h

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+// 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.
+
+#ifndef EXAMPLE_PRINTER_H
+#define EXAMPLE_PRINTER_H
+
+#include <string>
+
+class Printer
+{
+public:
+    virtual ~Printer() = default;
+    virtual void print(const std::string& message) = 0;
+};
+
+#endif // EXAMPLE_PRINTER_H