pub unsafe extern "C" fn CFNetServiceSetClient(
theService: CFNetServiceRef,
clientCB: CFNetServiceClientCallBack,
clientContext: *mut CFNetServiceClientContext,
) -> Booleanpub unsafe extern "C" fn CFNetServiceSetClient(
theService: CFNetServiceRef,
clientCB: CFNetServiceClientCallBack,
clientContext: *mut CFNetServiceClientContext,
) -> Boolean