/**
  * Public invoker
  * 
  * @param string $name
  * @param array $arguments
  * @return mixed
  */
 public function __call($name, $arguments)
 {
     if (substr($name, 0, 6) == 'linked') {
         return $this->_linked(substr($name, 6), $arguments);
     }
     if (substr($name, 0, 9) == 'formatted') {
         return $this->_formatted(substr($name, 9), $arguments);
     }
     return parent::__call($name, $arguments);
 }