sort function dose not exist

[mehdi-zarrin]

Hi, Thank you for you great package, unfortunately i couldn't find sort function. i would like to write query like below :

{
    "query": {
        "match": {
            "feed_type": {
                "query": "product",
                "type": "boolean"
            }
        }
    },
    "sort" : [
        {"created_at" : {"order" : "desc"}}
    ]
}