Elastic.Clients.Elasticsearch version: 9.0.3

Elasticsearch version: 9.0.1

.NET runtime version: 9.0

Operating system version: macOS

Description of the problem including expected versus actual behavior:

According to the docs https://www.elastic.co/docs/reference/elasticsearch/rest-apis/retrievers api should support following retrievers:

but RetrieverDescriptor provides only subset

Two retrievers are missing rescorer and linear

Expected behavior

I expect RescorerRetriever and LinearRetrievers generated and available through RetrieverDescriptor API.