Add missing method doc comment

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/device/details/mgt/DeviceInformationManager.java

@@ -107,6 +107,7 @@ public interface DeviceInformationManager {
      * @param deviceType device type of an device
      * @param payload payload of the event
      * @param eventType Event type being sent
+     * @return Http status code if a call is made and if failed to make a call 0
      * @throws DeviceDetailsMgtException
      */
      int publishEvents(String deviceId, String deviceType, String payload, String eventType)

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/device/details/mgt/impl/DeviceInformationManagerImpl.java

@@ -224,6 +224,7 @@ public class DeviceInformationManagerImpl implements DeviceInformationManager {
             log.error(msg, e);
             throw new DeviceDetailsMgtException(msg, e);
         } catch (ExecutionException e) {
+            //Exceptions thrown in ReportingPublisherManager will be wrapped under this exception
             String message = "Failed while publishing device information data to the reporting service for the device "
                     + deviceId;
             log.error(message, e);