From 61af15765aac538e060e2700d88b0cf06ff83bbd Mon Sep 17 00:00:00 2001
From: Guian Gumpac <guian.gumpac@improving.com>
Date: Thu, 13 Jun 2024 09:05:04 -0700
Subject: [PATCH] Added example for watch returning null

---
 .../java/glide/api/commands/TransactionsBaseCommands.java   | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/java/client/src/main/java/glide/api/commands/TransactionsBaseCommands.java b/java/client/src/main/java/glide/api/commands/TransactionsBaseCommands.java
index b2f2aad75d..0bb0bdbd84 100644
--- a/java/client/src/main/java/glide/api/commands/TransactionsBaseCommands.java
+++ b/java/client/src/main/java/glide/api/commands/TransactionsBaseCommands.java
@@ -24,6 +24,12 @@ public interface TransactionsBaseCommands {
      * transaction.set("sampleKey", "foobar");
      * Object[] result = client.exec(transaction).get();
      * assert result != null; // Executes successfully and keys are unwatched.
+     *
+     * assert client.watch(new String[] {"sampleKey"}).get() == "OK";
+     * transaction.set("sampleKey", "foobar");
+     * assert client.set("sampleKey", "hello world").get() == "OK";
+     * Object[] result = client.exec(transaction).get();
+     * assert result == null; // null is returned when the watched key is modified before transaction execution.
      * }</pre>
      */
     CompletableFuture<String> watch(String[] keys);