# VertexAIMultiTurnSearchRetriever

> **Class** in `langchain_google_community`

📖 [View in docs](https://reference.langchain.com/python/langchain-google-community/vertex_ai_search/VertexAIMultiTurnSearchRetriever)

Google Vertex AI Search retriever for multi-turn conversations.

Supports both stable (v1) and beta versions of the Discovery Engine API.

## Signature

```python
VertexAIMultiTurnSearchRetriever(
    self,
    **kwargs: Any = {},
)
```

## Extends

- `BaseRetriever`
- `_BaseVertexAISearchRetriever`

## Constructors

```python
__init__(
    self,
    **kwargs: Any = {},
)
```


## Properties

- `conversation_id`
- `model_config`

---

[View source on GitHub](https://github.com/langchain-ai/langchain-google/blob/a3f016b2a6c4af535df275545f76fa7424aa39e5/libs/community/langchain_google_community/vertex_ai_search.py#L641)