Method testString

test/cpp/src/TestServer.cpp:106–109

  void testVoid() override { printf("testVoid()\n"); }

  void testString(string& out, const string& thing) override {
    printf("testString(\"%s\")\n", thing.c_str());
    out = thing;
  }

  bool testBool(const bool thing) override {
    printf("testBool(%s)\n", thing ? "true" : "false");