How to add placeholder text to UITextView in Swift?

Hi everyone! I'm a beginner iOS developer writing in Swift. I've encountered a problem: UITextField has a built-in `placeholder` property that shows gray hint text while the field is empty. But UITextView doesn't have such a property. I need to create a multi-line text input field (for example, for a comment or description) so that when the user hasn't entered anything yet, a hint "Enter your text..." is displayed. As soon as the user starts typing, the placeholder should disappear. If the user deletes all the text, the placeholder should reappear. I tried using a `UILabel` placed on top of the UITextView, but it doesn't disappear when I start typing, or it remains visible if the text is empty. Here's my current code: ```swift import UIKit class ViewControll