*
     * @param responseData the response data containing FTP metadata
     * @return a list of role type strings extracted from the FTP file permissions
     */
    public List<String> getFtpRoleTypeList(final ResponseData responseData) {
        final List<String> roleTypeList = new ArrayList<>();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

                        roleTypeList.addAll(permissionHelper.getFileRoleTypeList(responseData));
                        roleTypeList.addAll(permissionHelper.getFtpRoleTypeList(responseData));
                    }
                }
                dataMap.put(fessConfig.getIndexFieldRole(), roleTypeList);
                final String id = crawlingInfoHelper.generateId(dataMap);

        roleTypeList.addAll(permissionHelper.getSmbRoleTypeList(responseData));
        roleTypeList.addAll(permissionHelper.getFileRoleTypeList(responseData));
        roleTypeList.addAll(permissionHelper.getFtpRoleTypeList(responseData));

        return roleTypeList;
    }

    /**
     * Get the site on file.
     * @param url The URL.
     * @param encoding The encoding.
     * @return The site on file.