TimelineSyncFunction<
Тип для аргумента функции Timeline.timeSync.
Реализация
typedef TimelineSyncFunction<T> = T Function();
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-developer/TimelineSyncFunction.html
