presto-local-file/src/main/java/io/prestosql/plugin/localfile/LocalFileRecordCursor.java/LocalFileRecordCursor/advanceNextPosition
class LocalFileRecordCursor:    @Override
    public boolean advanceNextPosition()
    {
        if (!includeServer) {
            return false;
        }

        try {
            fields = reader.readFields();
            return fields != null;
        }
        catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }