in example/crawl_async_example.dart [19:28]
Future<void> main() async {
// Limits calls to [findImports].
var _pool = Pool(10);
var allImports = await crawlAsync<Uri, Source>(
[Uri.parse('package:graphs/graphs.dart')],
read,
(from, source) => _pool.withResource(() => findImports(from, source)))
.toList();
print(allImports.map((s) => s.uri).toList());
}