src/vs/workbench/contrib/comments/browser/commentService.ts/CommentService/getCommentMenus
class CommentService:	getCommentMenus(owner: string): CommentMenus {
		if (this._commentMenus.get(owner)) {
			return this._commentMenus.get(owner)!;
		}

		let menu = this.instantiationService.createInstance(CommentMenus);
		this._commentMenus.set(owner, menu);
		return menu;
	}