fix response schema for manualjournalAttachmentById

Author: sangeet-joy_xero

docs/v4/accounting/index.html

@@ -31191,7 +31191,7 @@ <h3>Usage and SDK Samples</h3>
         String contentType = 'image/jpg';
 
         try {
-            byte[] result = apiInstance.getManualJournalAttachmentById(accessToken, xeroTenantId, manualJournalID, attachmentID, contentType);
+            ByteArrayInputStream result = apiInstance.getManualJournalAttachmentById(accessToken, xeroTenantId, manualJournalID, attachmentID, contentType);
             System.out.println(result);
         } catch (XeroException e) {
             System.err.println("Exception when calling AccountingApi#getManualJournalAttachmentById");

src/main/java/com/xero/api/client/AccountingApi.java

@@ -18884,22 +18884,24 @@ public HttpResponse getManualJournalAttachmentByFileNameForHttpResponse(
    * @param contentType The mime type of the attachment file you are retrieving i.e image/jpg,
    *     application/pdf
    * @param accessToken Authorization token for user set in header of each request
-   * @return byte[]
+   * @return ByteArrayInputStream
    * @throws IOException if an error occurs while attempting to invoke the API *
    */
-  public byte[] getManualJournalAttachmentById(
+  public ByteArrayInputStream getManualJournalAttachmentById(
       String accessToken,
       String xeroTenantId,
       UUID manualJournalID,
       UUID attachmentID,
       String contentType)
       throws IOException {
     try {
-      TypeReference<byte[]> typeRef = new TypeReference<byte[]>() {};
+      TypeReference<File> typeRef = new TypeReference<File>() {};
       HttpResponse response =
           getManualJournalAttachmentByIdForHttpResponse(
               accessToken, xeroTenantId, manualJournalID, attachmentID, contentType);
-      return apiClient.getObjectMapper().readValue(response.getContent(), typeRef);
+      InputStream is = response.getContent();
+      return convertInputToByteArray(is);
+
     } catch (HttpResponseException e) {
       if (logger.isDebugEnabled()) {
         logger.debug(