context ContinuityOfCareDocument
inv: self.documentationOf->forAll(docof : POCDMT000040DocumentationOf | 
		docof.serviceEvent.oclIsUndefined() or 
		not docof.serviceEvent.nullFlavor.oclIsUndefined() or
		(
			not docof.serviceEvent.classCode.oclIsUndefined() and 
			docof.serviceEvent.classCode=ActClassRoot::PCPR
		)
	)