public RangeIntervalGenerator(long start, long end)
 {
     _iterator = new RangeIntervalIterator(start, end);
 }
 /// <summary>
 /// Initializes a new instance of the <see cref="RangeIntervalGenerator"/> class.
 /// </summary>
 /// <param name="start">The start.</param>
 /// <param name="end">The end.</param>
 /// <param name="calendarStepUnit">The calendar step unit.</param>
 public RangeIntervalGenerator(long start, long end, int calendarStepAmount)
 {
     _iterator = new RangeIntervalIterator(start, end, calendarStepAmount);
 }