Access External System 7.3

Hi, I have to migrate an old application to the EP 7.3  platform.

I have the following old code that handles an external system:

ISystemLandscapeService landscapeService =

(ISystemLandscapeService)PortalRuntime.getRuntimeResources().getService(ISystemLandscapeService.KEY);

IDesigntimeSystemLandscapeService service = landscapeService.getIDesigntimeSystemLandscapeService();

ISystemObject system;

try {

system = (ISystemObject)service.getObjectRunTime(alias, user);

} catch (NamingException ex) {

}

Unfortunately this code is deprecated and no longer provided in the API. What is the new API to handle these external systems?

Thank you.