# Vector Service Usage Example
if hasattr(self, 'vector_service') and self.vector_service:
    similar_docs = self.vector_service.search(
        collection="documents",
        query="search query"
    )
    
    # Add documents to vector store
    document = {"content": "text", "metadata": {"key": "value"}}
    result = self.vector_service.add(
        collection="documents", 
        documents=[document]
    )
    return result