async def adelete_messages(self, key: str) -> Optional[list[ChatMessage]]:
        """Async version of Delete messages for a key."""
        client = await self.get_async_client()
        await client.query(DELETE_MESSAGES_QUERY, key=key)
Async version of Delete messages for a key.
llama-index-integrations/storage/chat_store/llama-index-storage-chat-store-gel/llama_index/storage/chat_store/gel/base.py