docs: public void deleteChildren(final long parentId) throws SQLException {
        Connection conn = null;
        PreparedStatement stmt = null;
        Timer.Context ctx = metrics.deleteChildrenTimer.time();
        try {
           conn = connectionSupplier.getConnection();
           stmt = conn.prepareStatement(deleteChildrenSQL);
           stmt.setLong(1, parentId);
           stmt.executeUpdate();
        } finally {
           ctx.stop();
           SQLUtil.closeQuietly(conn, stmt);
        }
     }