public function testEscapingSpecialChars()
{
$expected = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<root>
<stuff><>&'"</stuff>
</root>
XML;
$xml = Braintree\Xml::buildXmlFromArray(['root' => ['stuff' => '<>&\'"']]);
$this->assertEquals($expected, $xml);
}