public function testUpdateUser($userHref)
{
$text = $this->addTestSuffix(__FUNCTION__);
$xml = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<UserUpdate>
<fields>
<field>
<fieldDefinitionIdentifier>first_name</fieldDefinitionIdentifier>
<languageCode>eng-GB</languageCode>
<fieldValue>john john</fieldValue>
</field>
</fields>
</UserUpdate>
XML;
$request = $this->createHttpRequest('PATCH', $userHref, 'UserUpdate+xml', 'User+json');
$request->setContent($xml);
$response = $this->sendHttpRequest($request);
self::assertHttpResponseCodeEquals($response, 200);
}