ValueThreeCallbackFuture<V1, V2, V3> typedef
ValueThreeCallbackFuture<V1, V2, V3> =
Future<void> Function(V1 value1, V2 value2, V3 value3)
Future Callback Three
Implementation
typedef ValueThreeCallbackFuture<V1, V2, V3> = Future<void> Function(
V1 value1, V2 value2, V3 value3);