MissingRequiredPropertyException for docsRemaining property which comes as null from elasticsearch

[arsalaan997]

Java API client version

8.13.4

Java version

11

Elasticsearch Version

8.10.2

Problem description

There are conditions when totalDocs, docsRemaining & percentComplete are null in object of TransformProgress class. These fields should not be mandatory.

### Tasks

[l-trotta]

Hello, thanks for reporting this! Yes this looks correct, we'll also check the other fields in TransformProgress to make sure they're correct; then we'll fix it in the API specification and regenerate the java client to solve this issue.