NetworkImageWithRetry instead of
Image.network to load images from the network with a retry mechanism.
var avatar = new Image( image: new NetworkImageWithRetry('http://example.com/avatars/123.jpg'), );
The retry mechanism may be customized by supplying a custom
FetchStrategyBuilder is a utility class that helps building fetch strategy functions.
Please file feature requests and bugs at https://github.com/flutter/flutter/issues.