public static IEnumerable<TimeInterval> getTimeIntervals(StoredProcedures proc) {
var periods = proc.getInterval(IntType.time, () => Intervals.TimeDefault(), cfg => cfg.Periods);
var min = periods.First().From; var max = periods.Last().From;
foreach (var r in Enumerable.Range(0, 50/*let*/).SelectMany(y => Enumerable.Range(0, 12).Select(m => Admin.Interval.MonthCode(m + 1, y + 2013))).Where(mc => mc >= min && mc <= max)) {
yield return new TimeInterval() {
period = periods.Last(p => r >= p.From),
monthCode = r,
};
}
}