SAML2\Assertion::setValidAudiences PHP Method

    public function setValidAudiences(array $validAudiences = null)
    {
        $this->validAudiences = $validAudiences;
    }

 public function testMarshalling()
 {
     // Create an assertion
     $assertion = new Assertion();
     $assertion->setIssuer('testIssuer');
     $assertion->setValidAudiences(array('audience1', 'audience2'));
     $assertion->setAuthnContext('someAuthnContext');
     // Marshall it to a \DOMElement
     $assertionElement = $assertion->toXML();
     // Test for an Issuer
     $issuerElements = Utils::xpQuery($assertionElement, './saml_assertion:Issuer');
     $this->assertCount(1, $issuerElements);
     $this->assertEquals('testIssuer', $issuerElements[0]->textContent);
     // Test for an AudienceRestriction
     $audienceElements = Utils::xpQuery($assertionElement, './saml_assertion:Conditions/saml_assertion:AudienceRestriction/saml_assertion:Audience');
     $this->assertCount(2, $audienceElements);
     $this->assertEquals('audience1', $audienceElements[0]->textContent);
     $this->assertEquals('audience2', $audienceElements[1]->textContent);
     // Test for an Authentication Context
     $authnContextElements = Utils::xpQuery($assertionElement, './saml_assertion:AuthnStatement/saml_assertion:AuthnContext/saml_assertion:AuthnContextClassRef');
     $this->assertCount(1, $authnContextElements);
     $this->assertEquals('someAuthnContext', $authnContextElements[0]->textContent);
 }