/**
	 * Use this mode to indicate progress that has no total number of work units.
	 */
	infinite(): ProgressBar {
		this.bit.style.width = '2%';
		this.bit.style.opacity = '1';

		removeClasses(this.element, css_discrete, css_done);
		addClasses(this.element, css_active, css_infinite);

		return this;
	}

		const labelRenderer: ILabelRenderer = (el: HTMLElement): IDisposable | null => {
			this.element = append(el, $('a.action-label.icon'));
			addClasses(this.element, this.clazz);

			this.element.tabIndex = 0;
			this.element.setAttribute('role', 'button');
			this.element.setAttribute('aria-haspopup', 'true');
			this.element.title = this._action.label || '';

			return null;
		};