ios - Firebase Storage Warning: downloadURL()' is deprecated: Use `StorageReference.downloadURLWithCompletion()

Question

I just updated my project to the latest version of Firebase Storage and I am now getting a warning: downloadURL() is deprecated: Use StorageReference.downloadURLWithCompletion() to obtain a current download URL.

I looked at the Firebase image upload documentation but it still references using downloadURL() which is now depreciated. In the code below I am getting the download URL of the image as a String. The code works but now to be updated since downloadURL() is depreciated

uploadProfilePicTask.observe(.success) { snapshot in

  guard let profilePicStringURL = snapshot.metadata?.downloadURL()?.absoluteString else { return }
  ...

Here is my attempted updated. I tried the code below with the new downloadURLWithCompletion() but something in snapshot.metadata?.storageReference? is returning nil so I am not able to retrieve the url String. Does anyone know how to use the new downloadURLWithCompletion() appropriately below?

uploadProfilePicTask.observe(.success) { snapshot in
  snapshot.metadata?.storageReference?.downloadURL { URL, error in
    if let urlString = URL?.absoluteString {
      // Do something
    } else {
      return
    }
  }

Answer 1

Waitting for answers