假設我有一個用枚舉模式定義的參數：paths:  /echo:    get:      parameters:      - name: someEnum        in: query        required: true        schema:          type: string          enum: [A, B, C]      responses:        200:          description: Success          content:            text/plain:              schema:                type: stringSwagger codegen 為語言生成以下 Java 接口spring：    @ApiOperation(value = "", nickname = "echoGet", notes = "", response = String.class, tags={  })    @ApiResponses(value = {         @ApiResponse(code = 200, message = "Success", response = String.class) })    @RequestMapping(value = "/echo",        produces = { "text/plain" },         method = RequestMethod.GET)    default ResponseEntity<String> echoGet(@NotNull @ApiParam(value = "", required = true, allowableValues = "A, B, C") @Valid @RequestParam(value = "someEnum", required = true) String someEnum) {        if(getObjectMapper().isPresent() && getAcceptHeader().isPresent()) {        } else {            log.warn("ObjectMapper or HttpServletRequest not configured in default EchoApi interface so no example is generated");        }        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);    }someEnum生成接口的類型是字符串。如何用具有“A”、“B”、“C”值的 Java 枚舉替換它？