/**
  * Generates the URL used to initiate a sign-in with Azure AD.
  *
  * @return string The authorization URL used to initiate a sign-in to Azure AD.
  */
 function get_login_url()
 {
     $antiforgery_id = com_create_guid();
     $_SESSION['aadsso_antiforgery-id'] = $antiforgery_id;
     return AADSSO_AuthorizationHelper::get_authorization_url($this->settings, $antiforgery_id);
 }