presto-jdbc/src/main/java/io/prestosql/jdbc/PrestoDatabaseMetaData.java/PrestoDatabaseMetaData/getExportedKeys
class PrestoDatabaseMetaData:    @Override
    public ResultSet getExportedKeys(String catalog, String schema, String table)
            throws SQLException
    {
        throw new SQLFeatureNotSupportedException("exported keys not supported");
    }