Wysyłanie listy używając Postman

    @PostMapping(value = "/{id}/contributions/photos")
    @ResponseStatus(HttpStatus.CREATED)
    public
    ResponseEntity<Void> createPhotoContribution(
            @ApiParam(value = "The movie ID", required = true)
            @PathVariable("id") final Long id,
            @RequestPart(required = false) List<MultipartFile> elementsToAdd,
            @RequestPart(required = false) List<Long> idsToUpdate,
            @RequestPart(required = false) List<MultipartFile> elementsToUpdate,
            @RequestPart(required = false) Set<Long> idsToDelete,
            @RequestPart(required = false) final Set<String> sources,
            @RequestPart(required = false) final String comment
    )