21     std::cout << "foo(" << test << ") -> " << (test + 1) << "\n";  in foo()
31     std::cout << "fooYield(yield, " << test << ")...\n";  in fooYield()
37         std::cout << "call to foo failed: ec = " << ec << '\n';  in fooYield()
40     std::cout << "yielding call to foo OK! (-> " << testCount << ")\n";  in fooYield()
46     std::cout << "methodWithMessage(m, " << test << ") -> " << (test + 1)  in methodWithMessage()
53     std::cout << "voidBar() -> 42\n";  in voidBar()
73         std::cout << "async call to Properties.Get serialized via yield OK!\n";  in do_start_async_method_call_one()
77         std::cout << "ec = " << ec << ": " << std::get<int>(testValue) << "\n";  in do_start_async_method_call_one()
89         std::cout << "async call to Properties.Get serialized via yield OK!\n";  in do_start_async_method_call_one()
93         std::cout << "ec = " << ec << ": " << std::get<int>(testValue) << "\n";  in do_start_async_method_call_one()
157         std::cout  in do_start_async_to_yield()
162         std::cout << "ec = " << ec << ": " << testValue << "\n";  in do_start_async_to_yield()
172         std::cout  in do_start_async_to_yield()
177         std::cout << "TestYieldFunction expected error: " << ec << "\n";  in do_start_async_to_yield()
187         std::cout << "TestYieldFunctionNotExists returned unexpectedly\n";  in do_start_async_to_yield()
191         std::cout << "TestYieldFunctionNotExits expected error: " << ec << "\n";  in do_start_async_to_yield()
312         std::cout << "async_send callback\n";  in client()
322             std::cout << item.first << "\n";  in client()
328             std::cout << "async_method_call callback\n";  in client()
336                 std::cout << item.first << "\n";  in client()
349             std::cout << "async_method_call callback\n";  in client()
404             std::cout << "TestYieldFunction return " << testValue << "\n";  in client()
436     std::cout << "usage: " << argv[0] << " [--server | --client]\n";  in main()