private static final long serialVersionUID = 1L;

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

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

    // Test error code generation
    public void test_errorCodeGeneration() {

            });
        } catch (final WebApiException e) {
            String message;
            if (Constants.TRUE.equalsIgnoreCase(ComponentUtil.getFessConfig().getApiJsonResponseExceptionIncluded())) {
                logger.warn("Failed to access to Web API.", e);
                message = e.getMessage();
            } else {
                final String errorCode = UUID.randomUUID().toString();

            } catch (final IOException ignore) {}
            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();