Should I close InputStreamResource (Spring) somehow when sending http request by RestTemplate

Question

I have to send an HTTP request from my code which sends a PDF file to another backend service, which consumes multipart form data. I have found the following example how to do this: https://stackoverflow.com/a/44461661/19062211 I implemented this approach almost in the same way. Here I extend InputStreamResource

public final class MultipartInputStreamFileResource extends InputStreamResource {

    private final String filename;

    public MultipartInputStreamFileResourceV1(InputStream inputStream, String filename) {
        super(inputStream);
        this.filename = filename;
    }

    @Override
    public String getFilename() {
        return this.filename;
    }

    @Override
    public long contentLength() throws IOException {
        return -1; // we do not want to generally read the whole stream into memory ...
    }
}

And here I actually use it (to send post http request with multipart body)

public void sendPdf(byte[] pdf) {
    MultiValueMap<String, Object> params = new LinkedMultiValueMap<>();
    String fileName = "fileName.pdf";
    params.add("file", new MultipartInputStreamFileResource(new ByteArrayInputStream(pdf), fileName));
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.MULTIPART_FORM_DATA);
    HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(params, headers);
    String targetUri = "http://foo.bar";
    restTemplateClient.postForEntity(targetUri , requestEntity, Void.class);
}

And the question is should I close InputStreamResource (which I extended with MultipartInputStreamFileResource) somewhere or somehow or maybe I should close at least ByteArrayInputStream, which I create above.

I was looking for examples of using this approach and I didn't find any of them where I could see close invocations. But I am not sure that it's safe and won't result in memory or resource leak.

Thank you very much for your time and your answers. I really appriciate it.