public function deleteFile($arg) {
        foreach (func_get_args() as $name) {
            (new File($this->getChild($name)))->delete();
        }
        return true;
    }
public function deleteFile($arg) {
        foreach (func_get_args() as $name) {
            (new File($this->getChild($name)))->delete();
        }
        return true;
    }
public function deleteFile ( $ arg ) { foreach ( func_get_args ( ) as $ name ) { ( new File ( $ this -> getChild ( $ name ) ) ) -> delete ( ) ; } return true ; }
DELETE FILES IN CHILDREN
@param string $arg
@return bool
DELETE FILES IN CHILDREN