title: Swift tabbar add selector to tabItem
body: <p>Im using a custom popover menu for my tabbar controller. I need the tabbar item to open the menu. I need to add the tabbar item without them leading to any viewcontroller. I try to set them to nil in my tabcontroller class but it will not accept a nil item. If im able add them to the tabbar it will be triggered in the delegate </p>
  
  <pre><code>func tabBarController(_ tabBarController: UITabBarController, didSelect viewController: UIViewController) {
  
  
  }
  </code></pre>