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