title: how to get the height of the keyboard including the suggestions bar in swift 4
body: <p>I used :</p>
  
  <pre><code>NotificationCenter.default.addObserver(self, selector:#selector(keyboardWillShow), name: .UIKeyboardWillShow, object: nil)
  
  @objc func keyboardWillShow(notification: NSNotification) {
        if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        let keyboardHeight : Int = Int(keyboardSize.height)
        print("keyboardHeight",keyboardHeight)
        KeyboardHeightVar = keyboardHeight
        }
  }
  </code></pre>
  
  <p>to change to get the height of the keyboard, <em>but the height doesn't include the suggestions bar</em>. <strong>How do I get the value of the keyboard height plus the suggestions bar height?</strong></p>