public function testExtensionAttributes()
{
$extensionAttributes = $this->originalEvent->extensionAttributes;
$extensionAttributes['foo1'] = array('name' => 'foo1', 'value' => 'bar');
$extensionAttributes['foo2'] = array('name' => 'foo2', 'value' => 'rab');
$this->originalEvent->extensionAttributes = $extensionAttributes;
$this->assertEquals('bar', $this->originalEvent->extensionAttributes['foo1']['value']);
$this->assertEquals('rab', $this->originalEvent->extensionAttributes['foo2']['value']);
$originalEventXml = $this->originalEvent->saveXML();
$newOriginalEvent = new Extension\OriginalEvent();
$newOriginalEvent->transferFromXML($originalEventXml);
$this->assertEquals('bar', $newOriginalEvent->extensionAttributes['foo1']['value']);
$this->assertEquals('rab', $newOriginalEvent->extensionAttributes['foo2']['value']);
}