src/vs/editor/browser/viewParts/contentWidgets/contentWidgets.ts/ViewContentWidgets/constructor
class ViewContentWidgets:	constructor(context: ViewContext, viewDomNode: FastDomNode<HTMLElement>) {
		super(context);
		this._viewDomNode = viewDomNode;
		this._widgets = {};

		this.domNode = createFastDomNode(document.createElement('div'));
		PartFingerprints.write(this.domNode, PartFingerprint.ContentWidgets);
		this.domNode.setClassName('contentWidgets');
		this.domNode.setPosition('absolute');
		this.domNode.setTop(0);

		this.overflowingContentWidgetsDomNode = createFastDomNode(document.createElement('div'));
		PartFingerprints.write(this.overflowingContentWidgetsDomNode, PartFingerprint.OverflowingContentWidgets);
		this.overflowingContentWidgetsDomNode.setClassName('overflowingContentWidgets');
	}