public CuratorTransaction delete(ApplicationId application) {
        if (!curator.exists(applicationRolesPath(application))) return CuratorTransaction.empty(curator);
        return CuratorTransaction.from(CuratorOperations.delete(applicationRolesPath(application).getAbsolute()), curator);
    }
Returns a transaction which deletes application roles if they exist
configserver/src/main/java/com/yahoo/vespa/config/server/tenant/ApplicationRolesStore.java