code: protected void createDefaultDecisionStates(final Flow flow) {
          createServiceUnauthorizedCheckDecisionState(flow);
          createServiceCheckDecisionState(flow);
          createWarnDecisionState(flow);
          createGatewayRequestCheckDecisionState(flow);
          createHasServiceCheckDecisionState(flow);
          createRenewCheckActionState(flow);
      }
docs: Create default decision states.
  
  @param flow the flow