in lib/src/usage_impl_io.dart [113:124]
Future sendPost(String url, List<String> batch) async {
var data = batch.join('\n');
try {
var req = await _client.postUrl(Uri.parse(url));
req.write(data);
var response = await req.close();
await response.drain();
} on Exception {
// Catch errors that can happen during a request, but that we can't do
// anything about, e.g. a missing internet connection.
}
}