private function render()
    {
        $transformation = implode('_', array_column($this->items, 'rendered'));
        $transformation = preg_replace('#(_?/_?)+#isu', '/', $transformation);
        $transformation = trim($transformation, '/_');

        return $transformation;
    }
private function render()
    {
        $transformation = implode('_', array_column($this->items, 'rendered'));
        $transformation = preg_replace('#(_?/_?)+#isu', '/', $transformation);
        $transformation = trim($transformation, '/_');

        return $transformation;
    }
private function render ( ) { $ transformation = implode ( '_' , array_column ( $ this -> items , 'rendered' ) ) ; $ transformation = preg_replace ( '#(_?/_?)+#isu' , '/' , $ transformation ) ; $ transformation = trim ( $ transformation , '/_' ) ; return $ transformation ; }
Renders the transformation URL string.

@return string
Renders the transformation URL string .