flush method
Compute the provider (if it needs to be recomputed) and returns whether a new value was created or not.
Implementation
bool flush() {
if (_listener.list == null) {
throw StateError(
'Cannot call ProviderSubscription.flush() after close was called',
);
}
_listener.element.flush();
return _listener.element._notificationCount >
_listener.lastNotificationCount;
}