title: Swift error Cannot convert value of type '(AFHTTPRequestOperation?, AnyObject?) -> ()
body: <p>After I update xcode Version 8.0 (8A218a) swift 3, I got this error</p>
  
  <p>Cannot convert value of type '(AFHTTPRequestOperation?, AnyObject?) -> ()' to expected argument type '((AFHTTPRequestOperation?, Any?) -> Void)!'</p>
  
  <p>This is the following code that's shown error above.</p>
  
  <pre><code>jsonmanager.post( "http://myapi.com",
                        parameters: nil,
                        success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
                          if(responseObject.object(forKey: "meta")?.object(forKey: "status")?.intValue == 200){....
  </code></pre>
  
  <p>Am i doing something wrong ?</p>
  
  <p>It works well in previous version 7.3.1 swift 2.</p>