UserWarning when using VertexAISearchRetriever without beta flag

[MSzele]

Description

When using VertexAISearchRetriever without the beta=True flag (default is False obviously), the following warning appears:

langchain_google_community/vertex_ai_search.py:364: UserWarning: Beta features are configured but beta=False. The following beta features will be ignored:['custom_embedding_ratio']

Possible reason

The beta version validation only checks for None equality

langchain_google_community/vertex_ai_search.py:363: if not self.beta and any(value is not None for value in beta_features.values()):

but the custom_embedding_ratio defaults to 0.0

langchain_google_community/vertex_ai_search.py:333: custom_embedding_ratio: Optional[float] = Field(default=0.0, ge=0.0, le=1.0)

Environment

• langchain-google-community==2.0.7
• langchain-google-vertexai==2.0.23

Unacceptable workaround

Set the custom_embedding_ratio to None when using VertexAISearchRetriever