/**
* Adds XML support for serializer.
*
* This acts as a wrapper class for Symfony's XmlEncoder so that it is not
* implementing NormalizationAwareInterface, and can be normalized externally.
/**
* Adds XML support for serializer.
*
* This acts as a wrapper class for Symfony's XmlEncoder so that it is not
* implementing NormalizationAwareInterface, and can be normalized externally.