when(bridgeOptional.isPresent()).thenReturn(true);
OvsdbBridgeAugmentation bridge = mock(OvsdbBridgeAugmentation.class);
when(bridgeOptional.get()).thenReturn(bridge);
when(bridge.getDatapathId()).thenReturn(null);
String result = InventoryHelper.getInventoryNodeIdString(ovsdbBridge, ovsdbTpIid, dataBroker);
when(bridgeOptional.isPresent()).thenReturn(true);
OvsdbBridgeAugmentation bridge = mock(OvsdbBridgeAugmentation.class);
when(bridgeOptional.get()).thenReturn(bridge);
when(bridge.getDatapathId()).thenReturn(null);
String result = InventoryHelper.getInventoryNodeIdString(ovsdbBridge, ovsdbTpIid, dataBroker);