e-preview>

                    <a href=""
                       class="umb-node-preview-add"
                       id="content-start-add"
                       ng-click="model.openContentPicker()"
                       prevent-default>
                        <localize key="general_add">Add</localize>
                    </a>

                </umb-control-group>

                <umb-control-group label="@user_mediastartnodes" description="@user_mediastartnodeshelp">

                    <umb-node-pre