Remove warnings.
Remove warnings.

srawlins/streamy-dart,srawlins/streamy-dart,srawlins/streamy-dart,google/streamy-dart,ronlobo/streamy-dart,ronlobo/streamy-dart,ronlobo/streamy-dart,google/streamy-dart,google/streamy-dart,srawlins/streamy-dart,google/streamy-dart,ronlobo/streamy-dart