src/vs/editor/contrib/stickyScroll/browser/stickyScrollProvider.ts/StickyOutlineElement/comparator
class StickyOutlineElement:	private static comparator(range1: StickyRange, range2: StickyRange): number {
		if (range1.startLineNumber !== range2.startLineNumber) {
			return range1.startLineNumber - range2.startLineNumber;
		} else {
			return range2.endLineNumber - range1.endLineNumber;
		}
	}