return asStream(id).contentTypeOctetStream().stream(out -> {
                    final Path fessJsonPath = getFessJsonPath();
                    try (final InputStream in = Files.newInputStream(fessJsonPath)) {
                        out.write(in);
                    }
                });
            } else if ("doc.json".equals(id)) {

                    throwValidationError(messages -> messages.addErrorsFailedToDownloadElevateFile(GLOBAL), this::asDownloadHtml);
                }
                try (InputStream in = Files.newInputStream(tempFile)) {
                    out.write(in);
                }
            } finally {
                Files.delete(tempFile);
            }
        });
    }

    }

    protected void parseProjectProperties(final Path propPath) {
        try (final InputStream in = Files.newInputStream(propPath)) {
            final Properties prop = new Properties();
            prop.load(in);
            version = prop.getProperty("fess.version", "0.0.0");
            final String[] values = version.split("\\.");

                    throwValidationError(messages -> messages.addErrorsFailedToDownloadBadwordFile(GLOBAL), this::asDownloadHtml);
                }
                try (InputStream in = Files.newInputStream(tempFile)) {
                    out.write(in);
                }
            } finally {
                Files.delete(tempFile);
            }
        });
    }