title: Partial Apply forwarder in closure during Alamofire > 4.3 call
body: <p>I have an issue that I really don't understand in Alamofire, probably Swift knowledge missing here.</p>
  
  <p>I don't have any failure in my application, everything runs. It just ignore some closure at some point. Instead of finding my data inside my closure in debugger Xcode show me this : </p>
  
  <pre><code>0x0000000106eb1b30 AGKitCore partial apply forwarder for closure #1 
  (Alamofire.DataResponse&lt;Swift.String&gt;) -&gt; () in static 
  AGKitCore.AGKit.add(document: Foundation.Data, withFileType: 
  AGKitCore.AGKit.documentType, withIdentifier: 
  Swift.Optional&lt;Swift.String&gt;, completionHandler: (Swift.Optional&lt;Swift.Int&gt;) -&gt; ()) -&gt; ()
  </code></pre>
  
  <p>To add more context AGKit is called statically like this : </p>
  
  <pre><code>AGKit.add(document: someData, withFileType: .jpeg, withIdentifier: self.cart_local_id) { statusCode in ...closure } ```
  </code></pre>
  
  <p>and the function : </p>
  
  <pre><code>  AGKit.sharedInstance.core.api.upload(multipartFormData: { form in
          form.append(document, withName: "image", fileName: identifierForDocument, mimeType: "")
  
      }, with: Router.sendDocument(identifier: identifierForDocument)) { (results) in
  
          switch results { 
          case .success(request: let uploadDocumentRequest, streamingFromDisk: _, streamFileURL: _):
              //Pass here
              uploadDocumentRequest.responseString(completionHandler: { responseString in
                  completionHandler(responseString.response!.statusCode) //this is never called
              })
  
              break
  
          case .failure(let error): //No failure too
              print(error.localizedDescription)
              completionHandler(-1)
              break
          }
      }
  </code></pre>
  
  <p>So how should I manage this use case  of closure ? 
  Thanks :D</p>
  
  <p>(N.B : this is working very very well in Alamofire 4.3 and before, it has stopped working from 4.3+) </p>