docs: private static void selectWithCoreApi(CqlSession session) {
      // Reading the whole row as a JSON object:
      Row row =
          session
              .execute(
                  SimpleStatement.newInstance(
                      "SELECT JSON * FROM examples.querybuilder_json WHERE id = ?", 1))
              .one();
      assert row != null;
      System.out.printf("Entry #1 as JSON: %s%n", row.getString("[json]"));
  
      // Extracting a particular column as JSON:
      row =
          session
              .execute(
                  SimpleStatement.newInstance(
                      "SELECT id, toJson(specs) AS json_specs FROM examples.querybuilder_json WHERE id = ?",
                      2))
              .one();
      assert row != null;
      System.out.printf(
          "Entry #%d's specs as JSON: %s%n", row.getInt("id"), row.getString("json_specs"));
    }