ios - Add ButtonDownload in cell of table in swift -


i want add downloadbutton cell of table download. added button success button call delegate. so, call delegate how? library https://github.com/pavelkatunin/downloadbutton enter image description here

this code in cell. 

class downloadcell: uitableviewcell, pkdownloadbuttondelegate , pkdownloadersimulatordelegate {  @iboutlet weak var lbllanguages: uilabel! @iboutlet weak var imgdownloaded: uiimageview!  var downloadersimulator: pkdownloadersimulator? var pendingsimulator : pkdownloadersimulator?      override func awakefromnib() {     super.awakefromnib()    startdownloadlanguage.delegate = self     self.downloadersimulator = pkdownloadersimulator.init(progressinterval: 0.1)     self.downloadersimulator?.delegate = self;     self.pendingsimulator = pkdownloadersimulator.init(progressinterval: 0.05)     self.pendingsimulator?.delegate = self;  }  override func setselected(_ selected: bool, animated: bool) {     super.setselected(selected, animated: animated)   }    @iboutlet var startdownloadlanguage: pkdownloadbutton!    func downloadbuttontapped(_ downloadbutton: pkdownloadbutton!, currentstate state: pkdownloadbuttonstate) {     //        }   func simulator(_ simulator: pkdownloadersimulator!, didupdateprogress progress: double) {  }

}


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