code: function() {
  			var self = this;
  	
  			if (self.isLocked || self.isOpen || (self.settings.mode === 'multi' && self.isFull())) return;
  			self.focus();
  			self.isOpen = true;
  			self.refreshState();
  			self.$dropdown.css({visibility: 'hidden', display: 'block'});
  			self.positionDropdown();
  			self.$dropdown.css({visibility: 'visible'});
  			self.trigger('dropdown_open', self.$dropdown);
  		}
docs: Shows the autocomplete dropdown containing
  the available options.