/**
* Write the function block XML
*
* @param XMLWriter $xml
* @throws InvalidArgumentException
* @todo Validate the app.xml is actually a platform app
*/
public function writeXml(XMLWriter &$xml)
{
$xml->startElement('function');
$xml->writeAttribute('controlid', $this->getControlId());
$xml->startElement('installApp');
$xml->startElement('appxml');
if (!$this->getXmlFilename()) {
throw new InvalidArgumentException('XML Filename is required for install');
}
if (!is_readable($this->getXmlFilename())) {
throw new InvalidArgumentException('XML Filename is not readable for install');
}
$xml->writeCdata(file_get_contents($this->getXmlFilename()));
$xml->endElement();
//appxml
$xml->endElement();
//installApp
$xml->endElement();
//function
}
