+ * @return a CheckFuture containing the result of the read. The Future blocks until the
+ * commit operation is complete. Once complete:
+ * <ul>
+ * <li>If the data at the supplied path exists, the Future returns an Optional object
+ * containing the data.</li>
+ * <li>If the data at the supplied path does not exist, the Future returns
+ * Optional#absent().</li>
+ * <li>If the read of the data fails, the Future will fail with a
+ * {@link ReadFailedException} or an exception derived from ReadFailedException.</li>
+ * </ul>
+ */
+ CheckedFuture<Optional<NormalizedNode<?,?>>, ReadFailedException> read(YangInstanceIdentifier path);
+
+ /**
+ * Checks if data is available in the logical data store located at provided path.
+ * <p>
+ *
+ * Note: a successful result from this method makes no guarantee that a subsequent call to {@link #read}
+ * will succeed. It is possible that the data resides in a data store on a remote node and, if that
+ * node goes down or a network failure occurs, a subsequent read would fail. Another scenario is if
+ * the data is deleted in between the calls to <code>exists</code> and <code>read</code>
+ *
+ * @param path
+ * Path which uniquely identifies subtree which client want to
+ * check existence of
+ * @return a CheckFuture containing the result of the check.