src/vs/workbench/contrib/comments/browser/commentThreadAdditionalActions.ts/CommentThreadAdditionalActions/constructor
class CommentThreadAdditionalActions:	constructor(
		container: HTMLElement,
		private _commentThread: languages.CommentThread<T>,
		private _contextKeyService: IContextKeyService,
		private _commentMenus: CommentMenus,
		private _actionRunDelegate: (() => void) | null,
	) {
		super();

		this._container = dom.append(container, dom.$('.comment-additional-actions'));
		dom.append(this._container, dom.$('.section-separator'));

		this._buttonBar = dom.append(this._container, dom.$('.button-bar'));
		this._createAdditionalActions(this._buttonBar);
	}