src/Response/File.php
public function setFileName($fileName)
    {
        $fileName = preg_replace("([^\w\s\d\-_~,;\[\]\(\).])", '', $fileName);
        $fileName = preg_replace("([\.]{2,})", '', $fileName);
        $this->fileName = $fileName;
        return $this;
    }
public function setFileName($fileName)
    {
        $fileName = preg_replace("([^\w\s\d\-_~,;\[\]\(\).])", '', $fileName);
        $fileName = preg_replace("([\.]{2,})", '', $fileName);
        $this->fileName = $fileName;
        return $this;
    }
Set the Filename for response to be saved to
@param $fileName
@return self