public void FromOrdered_PerformanceTest()
{
const int itemCount = 100000;
var random = new Random(42);
int start;
int end;
var items = Enumerable.Range(0, itemCount).Select(i =>
{
start = random.Next(1000);
end = start + random.Next(1, 50);
return(new TestInterval(start, end));
}).OrderBy(i => i.Start).ThenBy(i => i.End).ToList();
var stopwatch = Stopwatch.StartNew();
var collection = IntervalCollection <int> .FromOrdered(items);
stopwatch.Stop();
Assert.Inconclusive($"Added {itemCount} items in {stopwatch.Elapsed}");
}