inv.setNodeConnectorStatisticsService(session.getRpcService(OpendaylightPortStatisticsService.class));
inv.setTopologyDiscovery(session.getRpcService(FlowTopologyDiscoveryService.class));
inv.setDataProviderService(session.getSALService(DataProviderService.class));
inv.setNodeConnectorStatisticsService(session.getRpcService(OpendaylightPortStatisticsService.class));
inv.setTopologyDiscovery(session.getRpcService(FlowTopologyDiscoveryService.class));
inv.setDataProviderService(session.getSALService(DataProviderService.class));