title: Spring/Postman Content type 'application/octet-stream' not supported
body: <p>I'm using Postman to send the following request:
  <a href="https://i.stack.imgur.com/RYHai.png" rel="noreferrer"><img src="https://i.stack.imgur.com/RYHai.png" alt="enter image description here"></a></p>
  
  <p>My controller looks like this:</p>
  
  <pre><code>@RestController
  @RequestMapping(path = RestPath.CHALLENGE)
  public class ChallengeController {
  
      private final ChallengeService&lt;Challenge&gt; service;
  
      @Autowired
      public ChallengeController(ChallengeService service) {
          this.service = service;
      }
  
      @ApiOperation(value = "Creates a new challenge in the system")
      @RequestMapping(method = RequestMethod.POST, consumes = {MediaType.MULTIPART_FORM_DATA_VALUE, MediaType.APPLICATION_OCTET_STREAM_VALUE},
          produces = MediaType.APPLICATION_JSON_VALUE)
      @ResponseStatus(HttpStatus.CREATED)
      public ChallengeDto create(@ApiParam(value = "The details of the challenge to create") @RequestPart("challengeCreate") @Valid @NotNull @NotBlank ChallengeCreateDto challengeCreate,
                             @ApiParam(value = "The challenge file") @RequestPart("file") @Valid @NotNull @NotBlank MultipartFile file) {
          return service.create(challengeCreate, file);
      }
  }
  </code></pre>
  
  <p>I already tried to change the "consumes" to delete the APPLICATION_OCTET_STREAM_VALUE to MULTIPART_FORM_DATA_VALUE and also tried to delete it, but none of these helped.</p>
  
  <p>Please tell me if you need more information.
  Thanks.</p>