* The value is, e.g. true <br>
     * comment: Whether to get file roles from a file.
     * @return The determination, true or false. (if not found, exception but basically no way)
     */
    boolean isFileRoleFromFile();

    /**
     * Get the value for the key 'ftp.role.from.file'. <br>
     * The value is, e.g. true <br>
     * comment: Whether to get FTP roles from a file.