src/vs/editor/contrib/hover/browser/contentHover.ts/ContentHoverController/startShowingAtRange
class ContentHoverController:	public startShowingAtRange(range: Range, mode: HoverStartMode, source: HoverStartSource, focus: boolean): void {
		this._startShowingOrUpdateHover(new HoverRangeAnchor(0, range, undefined, undefined), mode, source, focus, null);
	}