docs: @Override
      public DashboardData loadDashboardData() {
  
          long totalApps = totalApplicationNumber();
          long totalDevices = totalDeviceNumber();
          long totalMessages = totalMessages();
  
  
          final DashboardData data = new DashboardData();
          data.setApplications(totalApps);
          data.setDevices(totalDevices);
          data.setMessages(totalMessages);
  
          return data;
      }