closeEvent constant
EventStreamProvider<Event> closeEvent = const EventStreamProvider<Event>Static factory designed to expose close
events to event handlers that are not necessarily instances of Database.
See EventStreamProvider for usage information.
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-indexed_db/Database/closeEvent-constant.html