code: function cleanElement() {
          destroyListener();
  
          element
            .removeClass('md-active')
            .attr('aria-hidden', 'true')
            .css({
              'display': 'none',
              'top': '',
              'right': '',
              'bottom': '',
              'left': '',
              'font-size': '',
              'min-width': ''
            });
          element.parent().find('md-select-value').removeAttr('aria-hidden');
  
          announceClosed(opts);
  
          if (!opts.$destroy && opts.restoreFocus) {
            opts.target.focus();
          }
        }
docs: Restore the element to a closed state