Function gweather_sys::gweather_location_detect_nearest_city

pub unsafe extern "C" fn gweather_location_detect_nearest_city(
    loc: *mut GWeatherLocation,
    lat: c_double,
    lon: c_double,
    cancellable: *mut GCancellable,
    callback: GAsyncReadyCallback,
    user_data: gpointer
)