Getting Cursors (after and before) from IgUser -> media

[ernyka]

facebook origin response to business_discovery is like:

"business_discovery": {
        "name": "sample",
        "username": "sample",
        "media_count": 1124,
        ...
        "media": {
            "data": [
                {...}
            ],
            "paging": {
                "cursors": {
                    "after": "QVFIUjRUQnVtVWREVzN..."
                }
            }
        }
}

which you can use after and use it to request the next page by .limit(page_element_number).after(next_page_code) simply IgUser need to have media with paging element and media data but it only contains media list. I made my own IGUser Dto to map and get Cursors but it's better to include it in your dtos.