code: protected NamedParameterJdbcTemplate namedParameterJdbcTemplate(Connection conn) {
          DataSource ds = new SingleConnectionDataSource(conn, true);
          return new NamedParameterJdbcTemplate(ds);
      }
docs: Get {@link NamedParameterJdbcTemplate} instance for a given
  {@link Connection}.
  
  Note: the returned {@link JdbcTemplate} will not automatically close the
  {@link Connection}.
  
  @param conn
  @return
  @since 0.8.0