pub unsafe extern "C" fn participant_set_preferred_langugage(
hparticipant: SPXPARTICIPANTHANDLE,
preferred_language: *const c_char
) -> AZACHR
pub unsafe extern "C" fn participant_set_preferred_langugage(
hparticipant: SPXPARTICIPANTHANDLE,
preferred_language: *const c_char
) -> AZACHR