commit d340e2f229c93229e83fbfdf64475c0576b9b9e3
author Alexandre Ardhuin <alexandre.ardhuin@gmail.com> Thu Oct 04 18:44:23 2018 +0200
committer GitHub <noreply@github.com> Thu Oct 04 18:44:23 2018 +0200
tree e84d99e49b069fd482c9aa231bb9e8ac8ee4c173
parent 89c5ace1170c225182dde72182ac0c725be6aee6

apply lint prefer_void_to_null in dev/ (#22661)

dev/manual_tests/lib/material_arc.dart

diff --git a/dev/manual_tests/lib/material_arc.dart b/dev/manual_tests/lib/material_arc.dart
index 4d9ece5..23fae24 100644
--- a/dev/manual_tests/lib/material_arc.dart
+++ b/dev/manual_tests/lib/material_arc.dart
@@ -438,7 +438,7 @@
     ];
   }
 
-  Future<Null> _play(_ArcDemo demo) async {
+  Future<void> _play(_ArcDemo demo) async {
     await demo.controller.forward();
     if (demo.key.currentState != null && demo.key.currentState.mounted)
       demo.controller.reverse();