- * Listener upon registration receives an initial callback
- * {@link AsyncDataChangeListener#onDataChanged(org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent)}
- * which contains stable view of data tree at the time of registration.
- *
- * @param path Path (subtree identifier) on which client listener will be invoked.
- * @param listener Instance of listener which should be invoked on
- * @param scope Scope of change which triggers callback.
- * @return Listener Registration object, which client may use to close registration
- * / interest on receiving data changes.
+ * <p>
+ * Transactions in a chain need to be committed in sequence and each
+ * transaction should see the effects of previous transactions as if they
+ * happened.