fix(chat): refine handling of multiple returnDirect responses in DefaultChatClient (#4655)

Signed-off-by: Kuntal Maity <[email protected]>

Author: kuntal1461

spring-ai-client-chat/src/main/java/org/springframework/ai/chat/client/DefaultChatClient.java

@@ -25,8 +25,8 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.function.Consumer;
 
 import io.micrometer.observation.Observation;
@@ -48,8 +48,8 @@
 import org.springframework.ai.chat.model.ChatModel;
 import org.springframework.ai.chat.model.ChatResponse;
 import org.springframework.ai.chat.model.Generation;
-import org.springframework.ai.model.tool.ToolExecutionResult;
 import org.springframework.ai.chat.prompt.ChatOptions;
+import org.springframework.ai.model.tool.ToolExecutionResult;
 import org.springframework.ai.chat.prompt.Prompt;
 import org.springframework.ai.content.Media;
 import org.springframework.ai.converter.BeanOutputConverter;

spring-ai-client-chat/src/test/java/org/springframework/ai/chat/client/DefaultChatClientReturnDirectAggregationTests.java

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2023-2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.ai.chat.client;
 
 import java.util.List;