ToolResponseMessage responses is empty

Bug description

I am trying to manually add the tool call result to the session history, but the saved result is empty!

How should I handle it?

@Tool(description = "exit")
  public String exit(ToolContext toolContext){
      Object sessionId = toolContext.getContext().get("sessionId");
      chatMemory.add((String) sessionId, ToolResponseMessage.builder().responses(List.of(new ToolResponseMessage.ToolResponse("id", "name", "data"))).build());
      return "bye";
  }

but I got:

ToolResponseMessage{responses=[], messageType=TOOL, metadata={messageType=TOOL}}

conversation_id	content	type	timestamp
44c5e577-d99f-5306-1dbc-7421aa6317d0		TOOL	2025-12-03 18:57:26

Environment
SpringAI 1.1.0
JdbcChatMemoryRepository

Start with ToolResponseMessage and the JdbcChatMemoryRepository path used by chatMemory.add, then reproduce the example with the supplied ToolResponse value. Trace how the tool response is serialized and restored, and verify that the saved history retains the response data instead of producing an empty responses list.