def attach( self, s1: state.State, s2: state.State, sr: state.StateRegister ): s1.matchEventExpr(self.precond, s2, self.clean_event)
def attach(self, s1: state.State, s2: state.State, sr: state.StateRegister): s1.matchEventExpr(self.precond, s2, self.clean_event)