SAML2\AuthnRequest::setRequestedAuthnContext PHP Метод

    public function setRequestedAuthnContext($requestedAuthnContext)
    {
        assert('is_array($requestedAuthnContext) || is_null($requestedAuthnContext)');
        $this->requestedAuthnContext = $requestedAuthnContext;
    }

 public function testUnmarshalling()
 {
     $authnRequest = new AuthnRequest();
     $authnRequest->setRequestedAuthnContext(array('AuthnContextClassRef' => array('accr1', 'accr2'), 'Comparison' => 'better'));
     $authnRequestElement = $authnRequest->toUnsignedXML();
     $requestedAuthnContextElements = Utils::xpQuery($authnRequestElement, './saml_protocol:RequestedAuthnContext');
     $this->assertCount(1, $requestedAuthnContextElements);
     $requestedAuthnConextElement = $requestedAuthnContextElements[0];
     $this->assertEquals('better', $requestedAuthnConextElement->getAttribute("Comparison"));
     $authnContextClassRefElements = Utils::xpQuery($requestedAuthnConextElement, './saml_assertion:AuthnContextClassRef');
     $this->assertCount(2, $authnContextClassRefElements);
     $this->assertEquals('accr1', $authnContextClassRefElements[0]->textContent);
     $this->assertEquals('accr2', $authnContextClassRefElements[1]->textContent);
 }