What is the end-of-life timeline for the OpenSearch REST High-Level Client?

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
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Describe the issue:

When will we cease to support the OpenSearch REST high-level client? According to the official documentation, it’s already deprecated and future support will be discontinued. However, a specific termination date is not provided. I have noticed that there’s ongoing active development on the OpenSearch REST high-level client. Why would users migrate to the OpenSearch Java Client if we continue to support the OpenSearch REST High-Level Client?

Does the OpenSearch Java client lack any capabilities that the OpenSearch REST high-level client has? Alternatively, are we waiting for the OpenSearch Java client to gain more widespread adoption?