presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/conf/AccumuloTableProperties.java/AccumuloTableProperties/getRowId
class AccumuloTableProperties:    public static Optional<String> getRowId(Map<String, Object> tableProperties)
    {
        requireNonNull(tableProperties);

        @SuppressWarnings("unchecked")
        String rowId = (String) tableProperties.get(ROW_ID);
        return Optional.ofNullable(rowId);
    }