[Feature Request] Bedrock Knowledge Bases citations support

[wuodar]

In Bedrock KB, there's a retrieve_and_generate API that enables response generation with citations:
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/bedrock-agent-runtime/client/retrieve_and_generate.html

Are there any plans to support this feature in langchain-aws?

[3coins]

@wuodar
Thanks for raising this issue. This came up when we initially created KnowledgeBases retriever. Since retrieve_and_generate doesn't map to any specific component abstraction within LangChain, we don't have a clear plan to implement this.

Do you have any specific implementation in mind?