knowledge-8.x-1.x-dev/modules/knowledge_ldap/knowledge_ldap.module

<?php

/**
 * @file
 * Hooks provided by the Knowledge LDAP module.
 */

use Drupal\user\UserInterface;
use Symfony\Component\Ldap\Entry;

/**
 * Implements hook_ldap_user_edit_user_alter().
 */
function knowledge_ldap_ldap_user_edit_user_alter(UserInterface $account, Entry $entry, array $context) {
  $service = \Drupal::service('knowledge_ldap.leader');
  $service->updateLeaderField($account, $entry, $context['ldap_server']);

}