class OverheadFileSaver {

    public ValidationMessages handleOverheadFileRequest(HttpServletRequest request) {
        if(isOverheadFileUploadRequest(request)) {
            return uploadOverheadFile(request);
        }
        else if (isOverheadFileDeleteRequest(request)) {
            return deleteOverheadFile(request);
        }
        else {
            return new ValidationMessages();
        }
    }

}