code: function(option, index) {
          var select = this.element,
              dropdown = this.dropdown,
              options = this.options,
              selected = option.prop('selected'),
              activeClass = 'is-active';
  
          // Create elements
          var li = $('<li/>'),
              content = option.text(),
              description;
  
          if (selected) {
              li.addClass(activeClass);
          }
  
          if (description = this.readValue(option, options.getDescription)) {
              content += this.render(options.descTemplate).html(description).toString();
          }
  
          var a = $('<a/>', {
              html: content,
              href: 'javascript:;',
              role: 'option'
          }).aria('selected', selected);
  
          if (this.options.copyClasses) {
              this.copyClasses(option, li);
          }
  
          li.append(a);
  
          // Attach no events for disabled options
          if (option.prop('disabled')) {
              li.addClass('is-disabled');
              a.aria('disabled', true);
  
              return li;
          }
  
          // Set events
          if (this.multiple) {
              a.click(function() {
                  var self = $(this),
                      selected = false;
  
                  if (option.prop('selected')) {
                      self.parent().removeClass(activeClass);
  
                  } else {
                      selected = true;
                      self.parent().addClass(activeClass);
                  }
  
                  option.prop('selected', selected);
                  self.aria('selected', selected);
  
                  select.change();
              });
  
          } else {
              var self = this;
  
              a.click(function() {
                  dropdown
                      .find('li').removeClass(activeClass).end()
                      .find('a').aria('selected', false);
  
                  $(this)
                      .aria('selected', true)
                      .parent()
                      .addClass(activeClass);
  
                  self.hide();
                  self.index = index;
  
                  select.val(option.val());
                  select.change();
              });
          }
  
          return li;
      }
docs: Build the list item to represent the select option.
  
  @param {jQuery} option
  @param {Number} index
  @returns {jQuery}