fetchStream method
Fetch content as a stream from a resource identified by reference.
Depending on the API the reference can be a relative path, an absolute
URL, a key, or other identifier relevant on a context of an API.
Throws an ApiException if fetching fails. Implementations like HTTP
fetcher may also throw other status codes than codes for success as
exceptions.
Implementation
@override
Future<FileContent> fetchStream(Uri reference) => fetch(reference);