初始化Boost日志接收器时将函数对象作为筛选器传递

我正在创建新的水槽,如下面的示例所示:

void init()
{
    logging::add_file_log
    (
        keywords::file_name = "sample_%N.log",
        keywords::rotation_size = 10 * 1024 * 1024,
        keywords::time_based_rotation = sinks::file::rotation_at_time_point(0, 0, 0),
        keywords::format = "[%TimeStamp%]: %Message%"
    );

    logging::core::get()->set_filter
    (
        logging::trivial::severity >= logging::trivial::info
    );
} 

我已经实现了自己的筛选对象:

struct MyFilter {
    ...
    bool operator()(const boost::log::attribute_value_set& attrs) const noexcept
    {
        bool result = ....
        // Do my filtering
        return result;
    }
    ...
};

如何将其作为接收器初始化参数传递? 也就是说,我想添加以下参数:

keywords::filter = SOMETHING(MyFilter())

但到目前为止,我还不知道“某物”应该是什么。找不到任何示例。你能帮帮我吗?