fix: Temporarily remove the builder() method from DeepSeekAssistantMessage and modify related references to use new instead.

Signed-off-by: Sun Yuhan <[email protected]>

Author: sunyuhan1998

models/spring-ai-deepseek/src/main/java/org/springframework/ai/deepseek/DeepSeekAssistantMessage.java

@@ -119,35 +119,35 @@ public String toString() {
 				+ this.prefix + ", metadata=" + this.metadata + "]";
 	}
 
-	public static Builder builder() {
-		return new Builder();
-	}
+	public static final class Builder {
+
+		private String content;
+
+		private Map<String, Object> properties = Map.of();
+
+		private List<ToolCall> toolCalls = List.of();
 
-	public static final class Builder extends AssistantMessage.Builder {
+		private List<Media> media = List.of();
 
 		private Boolean prefix;
 
 		private String reasoningContent;
 
-		@Override
 		public Builder content(String content) {
 			this.content = content;
 			return this;
 		}
 
-		@Override
 		public Builder properties(Map<String, Object> properties) {
 			this.properties = properties;
 			return this;
 		}
 
-		@Override
 		public Builder toolCalls(List<ToolCall> toolCalls) {
 			this.toolCalls = toolCalls;
 			return this;
 		}
 
-		@Override
 		public Builder media(List<Media> media) {
 			this.media = media;
 			return this;

models/spring-ai-deepseek/src/main/java/org/springframework/ai/deepseek/DeepSeekChatModel.java

@@ -340,8 +340,8 @@ private Generation buildGeneration(Choice choice, Map<String, Object> metadata)
 		String textContent = choice.message().content();
 		String reasoningContent = choice.message().reasoningContent();
 
-		DeepSeekAssistantMessage assistantMessage = DeepSeekAssistantMessage.builder()
-			.content(textContent)
+		DeepSeekAssistantMessage.Builder builder = new DeepSeekAssistantMessage.Builder();
+		DeepSeekAssistantMessage assistantMessage = builder.content(textContent)
 			.reasoningContent(reasoningContent)
 			.properties(metadata)
 			.toolCalls(toolCalls)

models/spring-ai-deepseek/src/test/java/org/springframework/ai/deepseek/DeepSeekAssistantMessageTests.java

@@ -170,8 +170,8 @@ public void testBuilderComplete() {
 		List<ToolCall> toolCalls = List.of(new ToolCall("1", "function", "testFunction", "{}"));
 		List<Media> media = List.of();
 
-		DeepSeekAssistantMessage message = DeepSeekAssistantMessage.builder()
-			.content("content")
+		DeepSeekAssistantMessage.Builder builder = new DeepSeekAssistantMessage.Builder();
+		DeepSeekAssistantMessage message = builder.content("content")
 			.reasoningContent("reasoning")
 			.prefix(true)
 			.properties(properties)

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

@@ -121,17 +121,17 @@ public record ToolCall(String id, String type, String name, String arguments) {
 
 	}
 
-	public static class Builder {
+	public static final class Builder {
 
-		protected String content;
+		private String content;
 
-		protected Map<String, Object> properties = Map.of();
+		private Map<String, Object> properties = Map.of();
 
-		protected List<ToolCall> toolCalls = List.of();
+		private List<ToolCall> toolCalls = List.of();
 
-		protected List<Media> media = List.of();
+		private List<Media> media = List.of();
 
-		protected Builder() {
+		private Builder() {
 		}
 
 		public Builder content(String content) {