context XDSSDDocument
inv: self.component->size()>0 and 
self.component->exists(comp : POCDMT000040Component2 | 
       (not comp.nonXMLBody.oclIsUndefined()) and
       (not comp.nonXMLBody.languageCode.oclIsUndefined()) and 
       (not comp.nonXMLBody.languageCode.code.oclIsUndefined())
)