title: ProjectName-Swift issue - Can't find protocol declaration for 'CLLocationManagerDelegate'
body: <p>I'm now using Swift class in my existing Object-C project.In my Swift class, I'm using CLLocationManagerDelegate. Everything works well. However, when ProjectName-Swift.h is generated, an issue in ProjectName-Swift.h file shows that <strong>Can't find protocol declaration for 'CLLocationManagerDelegate'</strong>. I tried to silence the issue by importing <strong>CoreLocation/CoreLocation.h</strong> in ProjectName-Swift.h. It worked. But after compiled a few times, <strong>CoreLocation/CoreLocation.h</strong> was gone because ProjectName-Swift.h is generated from my swift class. And the issue comes again.  </p>
  
  <p>ProjectName-Swift.h</p>
  
  <p><img src="https://i.stack.imgur.com/zE1WJ.png" alt="issue screenshot">
  Here is my swift class (No issue here)
  <pre></p>
  
  <code>import UIKit
  import CoreLocation
  
  @objc class SSDLocationHelper: NSObject, CLLocationManagerDelegate {
     let locationManager = CLLocationManager()
     func findUserLocation() { ... 
                             } 
  </code></pre>
  
  <p></p>