Adding feature manager related changes

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/DeviceManagementServiceProviderImpl.java

@@ -62,8 +62,10 @@ public class DeviceManagementServiceProviderImpl implements DeviceManagementServ
     }
 
     @Override
-    public FeatureManager getFeatureManager() {
-        return null;
+    public FeatureManager getFeatureManager(String type) {
+        DeviceManager dms =
+                this.getPluginRepository().getDeviceManagementProvider(type);
+        return dms.getFeatureManager();
     }
 
     @Override

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementService.java

@@ -38,4 +38,6 @@ public interface DeviceManagementService extends DeviceManager, LicenseManager,
 
     List<Device> getDeviceListOfUser(String username) throws DeviceManagementException;
 
+
+
 }