                <div class="col-sm-10">
                        <input id="classtest" class="form-control-file form-control-sm" wicket:id="fileUpload1" type="file"
                               required/>
                    </div>
                </div>
                <div class="form-group row">
                    <label for="classproduction" class="col-sm-2 col-form-label col-form-label-sm">Production Class (optional)*</label>
                    <div class="col-sm-10">
                       