/**
* Dereference the file referenced by an assessmentSectionRef.
*
* @param AssessmentSectionRef $assessmentSectionRef An AssessmentSectionRef object to dereference.
* @param FileResolver $resolver The Resolver object to be used to resolve AssessmentSectionRef's href attribute.
* @throws XmlStorageException If an error occurs while dereferencing the referenced file.
* @return XmlAssessmentSection The AssessmentSection referenced by $assessmentSectionRef.
*/
protected static function resolveAssessmentSectionRef(AssessmentSectionRef $assessmentSectionRef, FileResolver $resolver)
{
try {
$href = $resolver->resolve($assessmentSectionRef->getHref());
$doc = new XmlDocument();
$doc->load($href);
return $doc->getDocumentComponent();
} catch (XmlStorageException $e) {
$msg = "An error occured while unreferencing file '{$href}'.";
throw new XmlStorageException($msg);
}
}