func captureOutput(
  _ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer,
  from connection: AVCaptureConnection
) {
  // Ensure we can retrieve an image from the provided sample buffer.
  guard let frame = CMSampleBufferGetImageBuffer(sampleBuffer) else {
    debugPrint("Unable to get image from sample buffer")
    return
  }

  // If the idRecognizer instance has not been created yet (i.e., it's nil),
  // we initialize it. This will only run once due to the nature of optional values.
  if idRecognizer == nil {
    idRecognizer = IDRecognizer(
      idType: "###ID_TYPE###",
      token: "###TOKEN_TAKEN_FROM_PAPILON###",
      licenceID: "###LICENCE_ID_TAKEN_FROM_PAPILON###"
    ) {
      // This closure is called after the IDRecognizer initialization.
      // Add any additional setup or tasks you wish to perform once after
      // IDRecognizer is initialized.
    }
  }

  // Using the initialized idRecognizer instance, we call the detectIDDocument function.
  if let results = idRecognizer?.detectIDDocument(in: frame) {
    print("======== RESULTS ========")
    for (key, value) in results {
      print("\(key): \(value)")
    }
    print("======== RESULTS ========")
  }
}