def do_change_realm_subdomain(realm: Realm, new_subdomain: str) -> None:
    realm.string_id = new_subdomain
    realm.save(update_fields=['string_id'])
def do_change_realm_subdomain(realm: Realm, new_subdomain: str) -> None:
    realm.string_id = new_subdomain
    realm.save(update_fields=['string_id'])