public function testExtensionAttributes()
{
$extensionAttributes = $this->theProperty->extensionAttributes;
$extensionAttributes['foo1'] = array('name' => 'foo1', 'value' => 'bar');
$extensionAttributes['foo2'] = array('name' => 'foo2', 'value' => 'rab');
$this->theProperty->extensionAttributes = $extensionAttributes;
$this->assertEquals('bar', $this->theProperty->extensionAttributes['foo1']['value']);
$this->assertEquals('rab', $this->theProperty->extensionAttributes['foo2']['value']);
$propertyXml = $this->theProperty->saveXML();
$newProperty = new Property();
$newProperty->transferFromXML($propertyXml);
$this->assertEquals('bar', $newProperty->extensionAttributes['foo1']['value']);
$this->assertEquals('rab', $newProperty->extensionAttributes['foo2']['value']);
}