return list;
    }

    String getApiJsonResponseHeaders();

    default List<Pair<String, String>> getApiJsonResponseHeaderList() {
        @SuppressWarnings("unchecked")
        List<Pair<String, String>> list = (List<Pair<String, String>>) propMap.get(API_JSON_RESPONSE_HEADER_LIST);
        if (list == null) {

Shinsuke Sugaya <******@****.***> 1774505215 +0900

Shinsuke Sugaya <******@****.***> 1774619792 +0900

     * comment: Headers for API JSON response.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getApiJsonResponseHeaders();

    /**
     * Get the value for the key 'api.json.response.exception.included'. <br>
     * The value is, e.g. false <br>
     * comment: Whether to include exceptions in API JSON response.