public function delete($machine_token_id)
{
// Find the token. Will throw an exception if it doesn't exist.
$machine_token = $this->session()->getUser()->getMachineTokens()->get($machine_token_id);
$name = $machine_token->get('device_name');
$this->log()->notice('Deleting {token} ...', ['token' => $name]);
$machine_token->delete();
$this->log()->notice('Deleted {token}!', ['token' => $name]);
}