Due to a typo at some XML elements, their content is always unmarshalled to DOM
object, while the intention of this project is to provide JAXB object. The
problem is the default behaviour of the @XmlAnyElement annotation, which always
produces DOM elements. This behaviour must get switched to lax=true to allow to
create JAXB instances for known objects, while creating DOM instances for all
others. This was correctly done at most elements, but was forgotten with others.