code: def account_setup(remote, token, resp):
      
      with db.session.begin_nested():
          # Retrieve ORCID from response.
          orcid = resp.get('orcid')
          full_name = resp.get('name')
  
          # Set ORCID in extra_data.
          token.remote_account.extra_data = {
              'orcid': orcid,
              'full_name': full_name,
          }
  
          user = token.remote_account.user
  
          # Create user <-> external id link.
          oauth_link_external_id(user, {'id': orcid, 'method': 'orcid'})
docs: Perform additional setup after user have been logged in.
  
      :param remote: The remote application.
      :param token: The token value.
      :param resp: The response.