Why doesn't camerax sample project put constant inside a class?

The Code A is from camerax sample project.

PERMISSIONS_REQUEST_CODE is a constant, I think it would be put inside a class, just like Code B.

I think Code B can reduce the couple and more clear

Is the Code A better Code B?

Code A

private const val PERMISSIONS_REQUEST_CODE = 10
private val PERMISSIONS_REQUIRED = arrayOf(Manifest.permission.CAMERA)

class PermissionsFragment : Fragment() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        if (!hasPermissions(requireContext())) {
            // Request camera-related permissions
            requestPermissions(PERMISSIONS_REQUIRED, PERMISSIONS_REQUEST_CODE)
        } else {
            // If permissions have already been granted, proceed
            Navigation.findNavController(requireActivity(), R.id.fragment_container).navigate(
                    PermissionsFragmentDirections.actionPermissionsToCamera())
        }
    }

    override fun onRequestPermissionsResult(
            requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (requestCode == PERMISSIONS_REQUEST_CODE) {
            if (PackageManager.PERMISSION_GRANTED == grantResults.firstOrNull()) {
                // Take the user to the success fragment when permission is granted
                Toast.makeText(context, "Permission request granted", Toast.LENGTH_LONG).show()
                Navigation.findNavController(requireActivity(), R.id.fragment_container).navigate(
                        PermissionsFragmentDirections.actionPermissionsToCamera())
            } else {
                Toast.makeText(context, "Permission request denied", Toast.LENGTH_LONG).show()
            }
        }
    }

   ...
}

Code B

private val PERMISSIONS_REQUIRED = arrayOf(Manifest.permission.CAMERA)

class PermissionsFragment : Fragment() {

    private val PERMISSIONS_REQUEST_CODE = 10

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        if (!hasPermissions(requireContext())) {
            // Request camera-related permissions
            requestPermissions(PERMISSIONS_REQUIRED, PERMISSIONS_REQUEST_CODE)
        } else {
            // If permissions have already been granted, proceed
            Navigation.findNavController(requireActivity(), R.id.fragment_container).navigate(
                    PermissionsFragmentDirections.actionPermissionsToCamera())
        }
    }

    override fun onRequestPermissionsResult(
            requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (requestCode == PERMISSIONS_REQUEST_CODE) {
            if (PackageManager.PERMISSION_GRANTED == grantResults.firstOrNull()) {
                // Take the user to the success fragment when permission is granted
                Toast.makeText(context, "Permission request granted", Toast.LENGTH_LONG).show()
                Navigation.findNavController(requireActivity(), R.id.fragment_container).navigate(
                        PermissionsFragmentDirections.actionPermissionsToCamera())
            } else {
                Toast.makeText(context, "Permission request denied", Toast.LENGTH_LONG).show()
            }
        }
    }

   ...
}

from Why doesn't camerax sample project put constant inside a class?