pub unsafe extern "system" fn libusb_get_device_list(
context: *mut libusb_context,
list: *mut *const *mut libusb_device,
) -> ssize_tpub unsafe extern "system" fn libusb_get_device_list(
context: *mut libusb_context,
list: *mut *const *mut libusb_device,
) -> ssize_t