title: Swift Playgrounds - use of unresolved identifier 'self'
body: <p>I am using Swift playgrounds trying to make an interactive app in which the user can click on a button to perform an action.</p>
  
  <pre><code>let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapBlurButton(_:)))
  
  func tapBlurButton(_ sender: UITapGestureRecognizer) {
  print("Please Help!")
  }
  </code></pre>
  
  <p>It is giving me the error:</p>
  
  <blockquote>
    <p>'use of unresolved identifier self'</p>
  </blockquote>
  
  <p>.
  How can I fix this in Swift 3?</p>