src/vs/editor/contrib/gotoError/gotoErrorWidget.ts/MarkerNavigationWidget/_fillBody
class MarkerNavigationWidget:	protected _fillBody(container: HTMLElement): void {
		this._parentContainer = container;
		container.classList.add('marker-widget');
		this._parentContainer.tabIndex = 0;
		this._parentContainer.setAttribute('role', 'tooltip');

		this._container = document.createElement('div');
		container.appendChild(this._container);

		this._message = new MessageWidget(this._container, this.editor, related => this._onDidSelectRelatedInformation.fire(related), this._openerService, this._labelService);
		this._disposables.add(this._message);
	}