I'm trying to update the `UITableView` with data fetched from Alamofire. 
My backend webservice returns the data as follows:

```
{"hashtags":["test","test2"]}

```

and my 'swift` code for that looks like this:

```
Alamofire.request("\(serverURL)/users/\(username)/hashtags")
        .validate()
        .responseJSON { response in
switch response.result {
            case .success:
                DispatchQueue.main.async(execute: {

    if let jsonData = response.result.value as? [String: AnyObject] {

    for hashtag in jsonData {
        print(JSON(hashtag))
        print(hashtag)
        if let userHashtags = SingleHashtag.fromJSON(JSON(hashtag)){

        for hash in userHashtags.hashtagText {
            print(hash)
            self.items.add(hash)

```

Function `SingleHashtag.fromJSON` is part of the class:

```
class SingleHashtag: NSObject {

    var hashtagText: [String]

    init(hashtagText: [String]) {
        self.hashtagText = hashtagText
        super.init()
    }

    class func fromJSON(_ json: JSON) -> SingleHashtag? {
        let hashtagText:[String] = json["hashtags"].arrayValue.map { $0.stringValue}
        return SingleHashtag(hashtagText: hashtagText)
    }

}

```

and I cannot make it work. The problem is that those two lines:

```
print(JSON(hashtag))
print(hashtag)

```

print:

```
unknown
("hashtags", <__NSArrayI 0x170c22200>(
test,
test2
)
)

```

and because I'm passing `unknown` there, the rest of the code is not executed. What did I miss here?