springdoc swagger3 文件上传API正确写法

@PutMapping("/api/file")
public String upload(
            MultipartFile file
) {}

@PutMapping("/api/file")
public String upload(
    @RequestPart("file")
            MultipartFile file
) {}

@PutMapping("/api/file",
	consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public String upload(
    @RequestPart("file")
            MultipartFile file
) {}