docs: public String retrieveReferenceList()
      {
          try 
          {
              references = gpUtil.getReferences(spaceKey, getPage().getTitle());
              if(isEditMode)
              {
                  repositories = gpUtil.getRepositories(spaceKey);
                  if(repositories.isEmpty())
                      throw new GreenPepperServerException("greenpepper.server.repositoriesnotfound", "");
                  
                  projectSystemUnderTests = gpUtil.getSystemsUnderTests(spaceKey);
                  if(projectSystemUnderTests.isEmpty())
                      throw new GreenPepperServerException("greenpepper.server.sutsnotfound", "");
              }
          } 
          catch (GreenPepperServerException e) 
          {
              addActionError(e.getId());
              isEditMode = false;
          }
  
          return SUCCESS;
      }