/**
  * Add Ldap fields to current user model.
  *
  * @param UserContract                       $model
  * @param adLDAP\collection\adLDAPCollection $ldap
  *
  * @return UserContract
  */
 protected function addLdapToModel($model, $ldap)
 {
     $combined = $ldap + $model->getAttributes();
     return $model->fill($combined);
 }