Why not support multiple @QueryMap at the same time

I have an API that looks something like this :

    @GetMapping("demo")
    public String demo(PageParam pageParam, Query query){
        return "success";
    }

I wish I could call this in feign Client:

public interface DemoFeignClient {
    @GetMapping("demo")
    String demo(@QueryMap PageParam pageParam,  @QueryMap Query query);
}

But feign only passes the attributes of the first object.

Why not support simultaneous use @QueryMap ？

Start by tracing how Feign processes the @QueryMap annotations shown in the issue and how it builds the request query parameters. Determine whether both PageParam and Query can contribute fields, then verify that a request using two @QueryMap parameters includes attributes from both objects.