Wikipediaから関連するキーワードを取得してきて配列にするSwiftコード

import Foundation

class GetWordArrayFromWikipedia: NSObject , XMLParserDelegate{

    var endFlag = false
    var WordArray:Array<String> = []
    func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String]) {

        if(elementName == "pl"){
            WordArray.append(attributeDict["title"]!)
        }
    }

    func getWordArrayFromStringJp(seedWord:String) -> Array<String>
    {
        WordArray = []

        let url = NSURL(string: "https://ja.wikipedia.org/w/api.php?format=xml&action=query&prop=links&titles=" + seedWord.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)! + "&&pllimit=1000")
        self.endFlag = true
        let task = URLSession.shared.dataTask(with: url! as URL, completionHandler: {data, response, error in
            let parser : XMLParser = XMLParser(data: data!)
            parser.delegate = self
            parser.parse()
            self.endFlag = false
        })

        task.resume()

        while self.endFlag == true{
            usleep(100)
        }



        return WordArray
    }

    func parserDidEndDocument(_ parser: XMLParser) {

    }

}

        var obj = GetWordArrayFromWikipedia();
        var array = obj.getWordArrayFromStringJp(seedWord: "機械学習");
        print(array)