EDIT

    public Pager<RegistrationDTO> doPageByIdentifier(

            @RequestParam(value = "identifier", required = true) String identifier,

            @RequestParam(value = "validateUniqueness") boolean validateUniqueness,

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

            HttpServletRequest request,

            HttpServletResponse response) throws IOException {

            @RequestParam(value = "identifierFilterPattern", required=false) String identifierFilterPattern,

            @RequestParam(value = "taxonNameFilterPattern", required=false) String taxonNameFilterPattern,

            @RequestParam(value = "referenceFilterPattern", required=false) String referenceFilterPattern,

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

            HttpServletRequest request,

            @SuppressWarnings("unused") HttpServletResponse response) {

    public Pager<RegistrationDTO> doPageByTaxomicInclusion(

            @RequestParam(value = "taxonNameFilter", required = true) String taxonNameFilterPattern,

            @RequestParam(value = "matchMode", required = false) MatchMode matchMode,

            @RequestParam(value = "pageSize", required = false, defaultValue="30" /*AbstractController.DEFAULT_PAGE_SIZE_VALUE*/ ) Integer pageSize,

            HttpServletRequest request,

            HttpServletResponse response) {

            @RequestParam(value = "submitterUuid", required=false) UUID submitterUuid,

            @RequestParam(value = "status", required=false) RegistrationStatusList status,

            @RequestParam(value = "nameUuid", required=true) Collection<UUID> nameUuids,

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

            HttpServletRequest request,

            HttpServletResponse response) throws PermissionDeniedException, RegistrationValidationException {