public function getClassNameById($id)
    {
        return (isset($this->classNameById[$id])) ? $this->classNameById[$id] : null;
    }
public function getClassNameById($id)
    {
        return (isset($this->classNameById[$id])) ? $this->classNameById[$id] : null;
    }
public function getClassNameById ( $ id ) { return ( isset ( $ this -> classNameById [ $ id ] ) ) ? $ this -> classNameById [ $ id ] : null ; }
Returns the className for a passed Id.

@param string $id The id to return className for

@author Benjamin Carl <opensource@clickalicious.de>

@return string|null The name of the class if set, otherwise NULL
Returns the className for a passed Id .