description

# upgradeNeededEvent constant

EventStreamProvider<VersionChangeEvent> const upgradeNeededEvent

Static factory designed to expose `upgradeneeded` events to event handlers that are not necessarily instances of OpenDBRequest.

See EventStreamProvider for usage information.

## Implementation

    static const EventStreamProvider<VersionChangeEvent> upgradeNeededEvent =
        const EventStreamProvider<VersionChangeEvent>('upgradeneeded');