type hint for multiquery retriever

Signed-off-by: thiswillbeyourgithub <[email protected]>

Author: thiswillbeyourgithub

wdoc/utils/retrievers.py

@@ -19,7 +19,7 @@
 def create_multiquery_retriever(
     llm: Union[ChatLiteLLM],
     retriever: BaseRetriever,
-) -> "MultiQueryRetriever":
+) -> BaseRetriever:
     # advanced mode using pydantic parsers
     llm_chain = prompts.multiquery | llm | multiquery_parser
     from langchain.retrievers.multi_query import MultiQueryRetriever