SearchResponse.Documents throws null reference exception on successful call

[stromblom]

Elastic.Clients.Elasticsearch version:
8.15.5

Description of the problem including expected versus actual behavior:
SearchResponse.Documents throws a null ref exception because HitsMetadata is null (and/or possibly HitsMetadata.Hits).

Stacktrace:
at Elastic.Clients.Elasticsearch.SearchResponse`1.get_Documents() in /_/src/Elastic.Clients.Elasticsearch.Shared/Api/SearchResponse.cs:line 21

Expected behavior
Should not throw an exception. HitsMetadata/Hits being null should be handled gracefully.
The Documents property and also Hits property should handle HitsMetadata being null and also declare correct nullability.