# LLM Service Usage Example
if hasattr(self, 'llm_service') and self.llm_service:
    message = {"role": "user", "content": inputs.get("query")}
    response = self.llm_service.call_llm(
        provider="openai",  # or "anthropic", "google"
        messages=[message],
        model="gpt-4"  # optional
    )
    return response.get("content")