title: StorageMetadata' has no member 'downloadURL'
body: <p>i use below code but when i update codes and pods get bellow error:</p>
  
  <blockquote>
    <p>StorageMetadata' has no member 'downloadURL'</p>
  </blockquote>
  
  <pre><code> static func uploadVideoToFirebaseStorage(videoUrl: URL, onSuccess: @escaping (_ videoUrl: String) -&gt; Void) {
      let videoIdString = NSUUID().uuidString
      let storageRef = Storage.storage().reference(forURL: Config.STORAGE_ROOF_REF).child("posts").child(videoIdString)
      storageRef.putFile(from: videoUrl, metadata: nil) { (metadata, error) in
          if error != nil {
              ProgressHUD.showError(error!.localizedDescription)
              return
          }
          if let videoUrl = metadata?.downloadURL()?.absoluteString {
              onSuccess(videoUrl)
          }
      }
  }
  </code></pre>
  
  <p>how i can fix this?</p>
  
  <p>update:</p>
  
  <p><a href="https://i.stack.imgur.com/3k8T2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3k8T2.png" alt="new errors"></a></p>