* and caches the result in the request attribute for subsequent calls.
     *
     * @return the detected user agent type, or OTHER if no specific type is detected
     */
    public UserAgentType getUserAgentType() {
        return LaRequestUtil.getOptionalRequest().map(request -> {
            UserAgentType uaType = (UserAgentType) request.getAttribute(USER_AGENT_TYPE);
            if (uaType == null) {

        final int pos = url.indexOf(':', 5);
        final boolean isLocalFile = pos > 0 && pos < 12;

        final UserAgentType ua = ComponentUtil.getUserAgentHelper().getUserAgentType();
        final DynamicProperties systemProperties = ComponentUtil.getSystemProperties();
        switch (ua) {
        case IE:
            if (isLocalFile) {