varrequest=newChatRequest{Model="test-model",Messages=[ new ChatMessage { Role = ChatMessageRole.Assistant, Content = string.Empty, ToolCalls = [ new ToolCall { Function = new ToolCallFunction { Name = "read_multiple_files", Arguments = new Dictionary<string, object> { ["paths"]=newList<object>{"/tmp/one.txt","/tmp/two.txt",},},},},],},],};stringjson=request.ToJson(SourceGenerationContext.Default);usingJsonDocumentdocument=JsonDocument.Parse(json);JsonElementpaths=document.RootElement.GetProperty("messages")[0].GetProperty("tool_calls")[0].GetProperty("function").GetProperty("arguments").GetProperty("paths");