isEmptyAsync method
Implementation
Future<bool> isEmptyAsync() async {
final rval = cvRunAsync<bool>(
(callback) => cffi.Net_Empty_Async(ref, callback),
(c, p) {
final rval = p.cast<ffi.Bool>().value;
calloc.free(p);
return c.complete(rval);
},
);
return rval;
}