image/svg+xml
class people_pimpl{ void person ();};
class person_pimpl{ void first_name (string); void last_name (string); void gender (); void age (short); void post_person ();};
class string_pimpl{ string post_string ();};
class short_pimpl{ short post_short ();};
class gender_pimpl{ void post_gender ();};