@Override
            public String getApiJsonResponseExceptionIncluded() {
                return "false";
            }
        });

        FessConfig config = ComponentUtil.getFessConfig();
        assertEquals("false", config.getApiJsonResponseExceptionIncluded());
    }

    // Test error code generation
    @Test

        } catch (final WebApiException e) {
            final int statusCode = e.getStatusCode();
            String message;
            if (Constants.TRUE.equalsIgnoreCase(ComponentUtil.getFessConfig().getApiJsonResponseExceptionIncluded())) {
                if (statusCode >= 400 && statusCode < 500) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Failed to access Web API.", e);
                    }

                }
            }
            return buf.toString();
        };
        final String message;
        if (Constants.TRUE.equalsIgnoreCase(ComponentUtil.getFessConfig().getApiJsonResponseExceptionIncluded())) {
            message = escapeJsonKeyValue(MESSAGE_FIELD, stacktraceString.get());
        } else {
            final String errorCode = UUID.randomUUID().toString();

     * comment: Whether to include exceptions in API JSON response.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getApiJsonResponseExceptionIncluded();

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