public void FillOptions (CalDavSynchronizer.Contracts.Options options)
{
options.IgnoreSynchronizationTimeRange = !_useSynchronizationTimeRange;
options.DaysToSynchronizeInThePast = _daysToSynchronizeInThePast;
options.DaysToSynchronizeInTheFuture = _daysToSynchronizeInTheFuture;
}