From 6ff84c16a04ea32865c2976c7141cf9e44ef8897 Mon Sep 17 00:00:00 2001
From: qianheng <qianheng@amazon.com>
Date: Sat, 20 Jul 2024 01:00:21 +0800
Subject: [PATCH] remove java21 API for backporting to 2.x (#2682)

Signed-off-by: Heng Qian <qianheng@amazon.com>
---
 .../main/java/org/opensearch/ml/engine/tools/MLModelTool.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java
index e943ea0ebc..1bcf6c9ef0 100644
--- a/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java
+++ b/ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/MLModelTool.java
@@ -69,7 +69,7 @@ public MLModelTool(Client client, String modelId, String responseField) {
         outputParser = o -> {
             try {
                 List<ModelTensors> mlModelOutputs = (List<ModelTensors>) o;
-                Map<String, ?> dataAsMap = mlModelOutputs.getFirst().getMlModelTensors().getFirst().getDataAsMap();
+                Map<String, ?> dataAsMap = mlModelOutputs.get(0).getMlModelTensors().get(0).getDataAsMap();
                 // Return the response field if it exists, otherwise return the whole response as json string.
                 if (dataAsMap.containsKey(responseField)) {
                     return dataAsMap.get(responseField);