async def aget(
        self, key: str, collection: str = DEFAULT_COLLECTION
    ) -> Optional[dict]:
        """
        Get a value from the store.

        Args:
            key (str): key
            collection (str): collection name

        """
        client = await self.get_async_client()
        result = await client.query_single(
            GET_QUERY,
            key=key,
            namespace=collection,
        )
        return json.loads(result) if result is not None else None

        Get a value from the store.

        Args:
            key (str): key
            collection (str): collection name

        
llama-index-integrations/storage/kvstore/llama-index-storage-kvstore-gel/llama_index/storage/kvstore/gel/base.py