[Feature Request] MapProxy 和 DraftProxy 支持支持隐式查询

[Gn3po4g]

希望能支持以下语句

select(a -> {
    var proxy = new MapProxy();
    proxy.put("s", a.children()); //children是oneToMany或manyToMany的导航属性
    return proxy;
})
select(Select.Draft.of(
    a.children()
))