SimpleClassDiagrams PetriNets_Runtime{
    Class Natural {}
    Class Boolean {}
    Class String {}

    Class Place {
        tokens : Natural
        name : String
    }
    Class Transition {
        executing : Boolean
    }
    Association P2T (Place, Transition) {
        weight : Natural
    }
    Association T2P (Transition, Place) {
        weight : Natural
    }
}
