Author: Nikolai Panasenko (nikolai@panasenko.de)
Inheritance: implements ApaiIO\ResponseTransformer\ResponseTransformerInterface
 public function testXmlToSimpleXMLObject()
 {
     $transformer = new XmlToSimpleXmlObject();
     $sampleXML = $this->getSampleXMLResponse();
     $simpleXML = $transformer->transform($sampleXML);
     $this->assertInstanceOf('\\SimpleXMLElement', $simpleXML);
     $this->assertEquals('Wikipedia Städteverzeichnis', $simpleXML->titel);
     $this->assertEquals('Genf', $simpleXML->eintrag[0]->stichwort);
 }