@Test
public void TC_getXMLFile_FileNotFoundException() throws JAXBException, ParserConfigurationException, SAXException, IOException
{

    OKW_XmlReader myXlReader = new OKW_XmlReader("DoesNotExists.xml");
    //Löst Ausname aus.
    Assertions.assertThrows( FileNotFoundException.class, () ->
    {
        myXlReader.getXMLFile();
    });
}