Adding more topology manager/store implementation.
diff --git a/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleDeviceManager.java b/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleDeviceManager.java
index c322b70..135edd9 100644
--- a/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleDeviceManager.java
+++ b/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleDeviceManager.java
@@ -150,7 +150,8 @@
     }
 
     // Personalized device provider service issued to the supplied provider.
-    private class InternalDeviceProviderService extends AbstractProviderService<DeviceProvider>
+    private class InternalDeviceProviderService
+            extends AbstractProviderService<DeviceProvider>
             implements DeviceProviderService {
 
         InternalDeviceProviderService(DeviceProvider provider) {