Parse returns a file path

[phpengine]

Hi there, I think my issue may be that I do not know Twig well. When I run the parse method I get a string back of a file path, where I was expecting html. I'm writing a small script to read junit xml and output html using the library.

``use Naroga\JUnitParser\Parser;

$all_files = scandir($source) ;
foreach ($all_files as $one_file) {
if (!in_array($one_file, array('.', '..'))) {
$file_content = file_get_contents($source.$one_file) ;
if (!isset($parser)) {
$twig = new \Twig_Environment(new \Twig_Loader_String());
$parser = new Parser($twig, $file_content);
} else {
$parser->addXmlContent($file_content);
}
}
}

$html = $parser->parse('html'); //Returns HTML result.
var_dump($html);
file_put_contents($target, $html) ;
``

At the point of the var dump, I get /path/to/project/vendor/naroga/php-junit-parser/Resources/view/report.html.twig . Could you please tell me what I've done wrong? Thanks