src/vs/editor/browser/viewParts/overviewRuler/decorationsOverviewRuler.ts/DecorationsOverviewRuler/onCursorStateChanged
class DecorationsOverviewRuler:	public override onCursorStateChanged(e: viewEvents.ViewCursorStateChangedEvent): boolean {
		this._cursorPositions = [];
		for (let i = 0, len = e.selections.length; i < len; i++) {
			this._cursorPositions[i] = e.selections[i].getPosition();
		}
		this._cursorPositions.sort(Position.compare);
		return true;
	}