code: public void generateNetworkElementsEvents(ShanksSimulation sim)
              throws ShanksException {
          super.generateNetworkElementEvents(sim);
          for (Scenario scenario : this.scenarios.keySet()) {
              scenario.generateNetworkElementEvents(sim);
          }
      }
docs: /*
  (non-Javadoc)
  
  @see es.upm.dit.gsi.shanks.model.scenario.Scenario#generateFailures()