presto-hive/src/main/java/io/prestosql/plugin/hive/security/SqlStandardAccessControlMetadata.java/SqlStandardAccessControlMetadata/revokeRoles
class SqlStandardAccessControlMetadata:    @Override
    public void revokeRoles(ConnectorSession session, Set<String> roles, Set<HivePrincipal> grantees, boolean adminOptionFor, Optional<HivePrincipal> grantor)
    {
        metastore.revokeRoles(roles, grantees, adminOptionFor, grantor.orElse(new HivePrincipal(USER, session.getUser())));
    }