src/vs/workbench/contrib/comments/browser/commentThreadWidget.ts/ReviewZoneWidget/_fillContainer
class ReviewZoneWidget:	protected _fillContainer(container: HTMLElement): void {
		this.setCssClass('review-widget');
		this._headElement = <HTMLDivElement>dom.$('.head');
		container.appendChild(this._headElement);
		this._fillHead(this._headElement);

		this._bodyElement = <HTMLDivElement>dom.$('.body');
		container.appendChild(this._bodyElement);

		dom.addDisposableListener(this._bodyElement, dom.EventType.FOCUS_IN, e => {
			this.commentService.setActiveCommentThread(this._commentThread);
		});
	}