+import org.opendaylight.controller.sal.binding.api.data.DataProviderService
+import org.opendaylight.controller.sal.compatibility.topology.TopologyAdapter
+import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase
+import org.opendaylight.controller.sal.core.Node
+import org.opendaylight.controller.sal.core.NodeConnector
+import org.opendaylight.controller.sal.discovery.IDiscoveryService
+import org.opendaylight.controller.sal.flowprogrammer.IPluginInFlowProgrammerService
+import org.opendaylight.controller.sal.flowprogrammer.IPluginOutFlowProgrammerService
+import org.opendaylight.controller.sal.inventory.IPluginInInventoryService
+import org.opendaylight.controller.sal.inventory.IPluginOutInventoryService