WorkOrderAssignment missing
https://sourceforge.net/p/plcslib/plcslib-psmmodel/164
WorkRequest has Id and requestId as identifiers - delete requestId
https://sourceforge.net/p/plcslib/plcslib-psmmodel/165
ActivityHappeningRelationship relating/related wrong way round
https://sourceforge.net/p/plcslib/plcslib-psmmodel/169
StringValue not sure about valueComponent
https://sourceforge.net/p/plcslib/plcslib-psmmodel/170
WorkRequestMethodAssignment / ActivityMethodAssignment
https://sourceforge.net/p/plcslib/plcslib-psmmodel/171
Create AssignmentObjectRelationship
https://sourceforge.net/p/plcslib/plcslib-psmmodel/174
TimeInterval no Id
https://sourceforge.net/p/plcslib/plcslib-psmmodel/179
Cardinality on Assignment Objects
https://sourceforge.net/p/plcslib/plcslib-psmmodel/180
Inverse to SubsetMember from ExternalOwlClass to support OCL constraints
