public function setUp()
{
$path = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'sonata_exporter_test';
$this->folder = new \SplFileInfo($path);
$this->tearDown();
mkdir($path);
$this->dtd = 'http://gsa.example.com/gsafeed.dtd';
$this->datasource = 'default_collection';
$this->feedtype = 'metadata-and-url';
}