6696             struct BenchmarkFunction {  struct
6698                 struct callable {
6704                 struct model : public callable {
6723                 struct do_nothing { void operator()() const {} };  in operator ()()
6726                 BenchmarkFunction(model<T>* c) : f(c) {}  in BenchmarkFunction()  argument
6729                 BenchmarkFunction()  in BenchmarkFunction()  function
6734                     BenchmarkFunction(Fun&& fun)  in BenchmarkFunction()  function
6737                 BenchmarkFunction(BenchmarkFunction&& that)  in BenchmarkFunction()  function
6740                 BenchmarkFunction(BenchmarkFunction const& that)  in BenchmarkFunction()  function
6743                 BenchmarkFunction& operator=(BenchmarkFunction&& that) {  in operator =()
6748                 BenchmarkFunction& operator=(BenchmarkFunction const& that) {  in operator =()
6753                 void operator()(Chronometer meter) const { f->call(meter); }  in operator ()()
6756                 std::unique_ptr<callable> f;