code: @RequestMapping(value = "/tenants", method = RequestMethod.GET)
      public String getTenants(@RequestParam ("tenantId") Integer tenantId, Locale locale, ModelMap modelMap, Model model) {
          
          AuthenticationProfile authenticationProfile = (AuthenticationProfile)modelMap.get("tenantAuthorization");
          //if there is no active user, go to the auth page.
          if (authenticationProfile == null) {
              setupHomePage (locale, model);
              return "home";
  
          }
  
          // if no tenant id was supplied just use the active tenantID in the user auth.
          if (tenantId == null) {
              tenantId = authenticationProfile.getActiveScope().getId();
          }
          
          // we need to get a new auth ticket for the tenant and update the authenticationProfile in session.
          if (tenantId != null && !tenantId.equals(authenticationProfile.getActiveScope().getId())) {
              authenticationProfile = UserAuthenticator.refreshUserAuthTicket(authenticationProfile.getAuthTicket(), tenantId);
              model.addAttribute("tenantAuthorization", authenticationProfile);
          }
          
          // Authorize user and get tenants
          List<Scope> tenants = authenticationProfile.getAuthorizedScopes();
          if (tenants == null) {
              tenants = new ArrayList<Scope>();
              tenants.add(authenticationProfile.getActiveScope());    
          }
          
          
          model.addAttribute("user", authenticationProfile.getUserProfile());
          model.addAttribute("availableTenants", tenants);
          model.addAttribute("tenantId", tenantId);
          List<Site> sites = null;
          if (tenants != null && tenants.size() > 0) {
              sites = getAvailableTenantSites(tenantId);
          } else {
              sites = new ArrayList<Site>();
          }
          model.addAttribute("sites", sites);
                  
          return "tenants";
      }
docs: This method is used when the application and user have been authorized
  @param tenantId
  @param locale
  @param modelMap
  @param model
  @return