/**
 		@brief		Sort the options.
 		@since		2016-01-12 22:25:10
 	**/
 public function sort_inputs()
 {
     // The sort_inputs() method from the sort_order trait requires inputs, which a select doesn't have.
     $this->inputs = $this->options;
     parent::sort_inputs();
     $this->options = $this->inputs;
     return $this;
 }