code: def disconnect_handler(remote, *args, **kwargs):
      
      if not current_user.is_authenticated:
          return current_app.login_manager.unauthorized()
  
      remote_account = RemoteAccount.get(user_id=current_user.get_id(),
                                         client_id=remote.consumer_key)
      external_ids = [i.id for i in current_user.external_identifiers
                      if i.method == GLOBUS_EXTERNAL_METHOD]
  
      if external_ids:
          oauth_unlink_external_id(dict(id=external_ids[0],
                                        method=GLOBUS_EXTERNAL_METHOD))
  
      if remote_account:
          with db.session.begin_nested():
              remote_account.delete()
  
      return redirect(url_for('invenio_oauthclient_settings.index'))
docs: Handle unlinking of remote account.
  
      :param remote: The remote application.
      :returns: The HTML response.