code: def account_setup(remote, token, resp):
      
      info = get_user_info(remote)
      user_id = get_user_id(remote, info['preferred_username'])
      with db.session.begin_nested():
  
          token.remote_account.extra_data = {
              'login': info['username'],
              'id': user_id}
  
          # Create user <-> external id link.
          oauth_link_external_id(
              token.remote_account.user, dict(
                  id=user_id,
                  method=GLOBUS_EXTERNAL_METHOD)
          )
docs: Perform additional setup after user have been logged in.
  
      :param remote: The remote application.
      :param token: The token value.
      :param resp: The response.