 extension MainTableViewController {
 
     func alertDefault() {
+        let presenter = alertPresenter()
+        
         presenter.presentationType = .alert
 
         presenter.transitionType = nil

    }

    func customPresentation() {
        customPresentViewController(customPresenter, viewController: alertController, animated: true, completion: nil)
    }

    func fullScreenPresentation() {
        presenter.presentationType = .fullScreen

        presenter.transitionType = .coverVertical

    }

    func topHalfDefault() {
        let presenter = alertPresenter()
        
        presenter.presentationType = .topHalf

        presenter.transitionType = nil
