Arsse/tests/docroot/Icon/SVG2.php

<?php return [
    'mime'    => "image/svg+xml",
    'content' => '<svg xmlns="http://www.w3.org/2000/svg" width="900" height="600"><rect width="900" height="600" fill="#ED2939"/><rect width="600" height="600" fill="#fff"/><rect width="300" height="600" fill="#002395"/></svg>',
];