 
     #if DEBUG
     NotificationCenter.default.addObserver(self,
-                                           selector: #selector(printInstanceIDToken),
-                                           name: .InstanceIDTokenRefresh,
+                                           selector: #selector(printInstallationsID),
+                                           name: .InstallationIDDidChange,
                                            object: nil)
     #endif
   }

//

import Firebase
import FirebaseInstanceID
import UIKit

enum ColorScheme {

    }
  }

  @objc func printInstallationsID() {
    #if DEBUG
    Installations.installations().installationID { (identifier, error) in
      if let error = error {
        print("Error fetching installations ID: \(error)")
      } else if let identifier = identifier {
        print("Remote installations ID: \(identifier)")
      }
    }
    #endif
