EDIT

	    if (ui == null) {

	        ServiceReference<?> reference = bundleContext.getServiceReference(IProvisioningAgent.SERVICE_NAME);

	        IProvisioningAgent agent = (IProvisioningAgent) bundleContext.getService(reference);

	        session = new ProvisioningSession(agent);

	        Policy policy = null;// = (Policy) ServiceHelper.getService(ProvUIActivator.getContext(), Policy.class.getName());

	        if (policy == null) {

	            policy = new Policy();

	        }

	        ui = new ProvisioningUI(session, IProfileRegistry.SELF, policy);

	    }