title: Could not cast value of type 'NSMutableURLRequest' (0x11beb7040) to 'Alamofire.URLRequestConvertible' (0x11beb9040)
body: <p>when build my code then crash on  <code>Alamofire.request(request as! URLRequestConvertible).responseJSON()</code>. pls suggest how to fix this crash</p>
  
  <pre><code>let url = NSURL(string: "https://jsonplaceholder.typicode.com/users")
  let request = NSMutableURLRequest(url:url! as URL)
  request.httpMethod = "GET"
  request.setValue("application/json", forHTTPHeaderField: "Content-Type")
  
  Alamofire.request(request as! URLRequestConvertible).responseJSON(){ response in
  
         switch response.result
         {
            case .success(let data):                
               print(" i got my Data Yup",data)          
            case .failure(let error):
               print(error)                                
          }
      }
  </code></pre>