llmStreamingCompletedHandler
A handler invoked after streaming from the language model (LLM) is complete.
This variable represents a custom implementation of the AfterStreamHandler
functional interface, allowing post-processing or custom logic to be performed once streaming has finished.
The handler receives various pieces of information about the stream, including the original prompt, the tools used, the model invoked, and a unique run identifier.
Customize this handler to implement specific behavior required after streaming completes.