Make AssistantMessage and ToolResponseMessage constructors protected

Signed-off-by: Jemin Huh <[email protected]>

Author: JM-Lab

spring-ai-model/src/main/java/org/springframework/ai/chat/messages/AssistantMessage.java

@@ -44,7 +44,7 @@
  */
 public class AssistantMessage extends AbstractMessage implements MediaContent {
 
-	private final List<ToolCall> toolCalls;
+	protected final List<ToolCall> toolCalls;
 
 	protected final List<Media> media;
 
@@ -56,7 +56,7 @@ public AssistantMessage(Resource resource) {
 		this(MessageUtils.readResource(resource));
 	}
 
-	private AssistantMessage(String content, Map<String, Object> metadata, List<ToolCall> toolCalls,
+	protected AssistantMessage(String content, Map<String, Object> metadata, List<ToolCall> toolCalls,
 			List<Media> media) {
 		super(MessageType.ASSISTANT, content, metadata);
 		Assert.notNull(toolCalls, "Tool calls must not be null");

spring-ai-model/src/main/java/org/springframework/ai/chat/messages/ToolResponseMessage.java

@@ -40,7 +40,7 @@ public ToolResponseMessage(List<ToolResponse> responses) {
 		this(responses, Map.of());
 	}
 
-	private ToolResponseMessage(List<ToolResponse> responses, Map<String, Object> metadata) {
+	protected ToolResponseMessage(List<ToolResponse> responses, Map<String, Object> metadata) {
 		super(MessageType.TOOL, "", metadata);
 		this.responses = responses;
 	}