PreparedBatchPart part = new PreparedBatchPart(this, rewriter, connection, sql);
PreparedBatchPart part = new PreparedBatchPart(this, rewriter, connection, preparedStatementCache, sql);
    public PreparedBatchPart add()    {        PreparedBatchPart part = new PreparedBatchPart(this, rewriter, connection, sql);        parts.add(part);        return part;    }