src/vs/editor/contrib/hover/browser/hover.ts/ModesHoverController/_getOrCreateContentWidget
class ModesHoverController:	private _getOrCreateContentWidget(): ContentHoverController {
		if (!this._contentWidget) {
			this._contentWidget = this._instantiationService.createInstance(ContentHoverController, this._editor);
		}
		return this._contentWidget;
	}