Fix build failure

components/mobile-plugins/android-plugin/org.wso2.carbon.device.mgt.mobile.android.api/src/test/java/org/wso2/carbon/mdm/services/android/mocks/DeviceManagementProviderServiceMock.java

@@ -852,4 +852,9 @@ public class DeviceManagementProviderServiceMock implements DeviceManagementProv
             throws DeviceManagementException {
         return null;
     }
+
+    @Override
+    public Boolean SendDeviceNameChangedNotification(Device device) throws DeviceManagementException {
+        return null;
+    }
 }