presto-hive/src/main/java/io/prestosql/plugin/hive/security/AccessControlMetadata.java/AccessControlMetadata/listRoleGrants
class AccessControlMetadata:    default Set<RoleGrant> listRoleGrants(ConnectorSession session, HivePrincipal principal)
    {
        throw new PrestoException(NOT_SUPPORTED, "This connector does not support roles");
    }