[keycloak-user] redhat sso get baseurl in custom theme for email registration

Hello all, Your help would be greatly appreciated. I am using single sign on service from redhat v7.1 and I am developing a custom template (in a custom theme) for registration email. In the email, Unfortunately, I didn’t find the proper way to get the client baseUrl or the url.registrationUrl . Could you please help me? Thank you in advanced. Sincerely, Antonia Nicolaou