EDIT

    @RequestMapping(method = RequestMethod.GET, value={"findByMarker"}, params={"subtree"})

    public Pager<FindByMarkerDTO<T>> doFindByMarker(

            @RequestParam(value = "class", required = false) Class<T> type,

            @RequestParam(value = "value", required = false) Boolean value,

            @RequestParam(value = "pageNumber", required = false) Integer pageNumber,

            @RequestParam(value = "pageSize", required = false) Integer pageSize,

            throws IOException {

        MarkerType markerType = null;

            if (term != null && term.isInstanceOf(MarkerType.class)){

                markerType = CdmBase.deproxy(term, MarkerType.class);

            }