Method do_run

tests/validate_examples/RunExample.cpp:86–92

        _is_setup = g_example->do_setup(g_example_argv.size(), &g_example_argv[0]);
    }
    void do_run() override
    {
        if (_is_setup)
        {
            g_example->do_run();
        }
    }
    void do_teardown() override
    {
        if (_is_setup)