src/vs/editor/common/model/intervalTree.ts/IntervalNode/setCachedOffsets
class IntervalNode:	public setCachedOffsets(absoluteStart: number, absoluteEnd: number, cachedVersionId: number): void {
		if (this.cachedVersionId !== cachedVersionId) {
			this.range = null;
		}
		this.cachedVersionId = cachedVersionId;
		this.cachedAbsoluteStart = absoluteStart;
		this.cachedAbsoluteEnd = absoluteEnd;
	}