public void Begin()
{
this.EnsureCanExecute();
_transactionEventSink.RaiseObjectsUnloadingEvent(Array.AsReadOnly(_domainObjects));
_unloadDataCommand.Begin();
}
public void Begin()
{
RaiseRecurringBeginEvent(domainObjects => _transactionEventSink.RaiseObjectsUnloadingEvent(domainObjects));
}