@op(
    out={
        "ip_metadata": Out(
            asset_key=AssetKey(["schema","table"]),
            asset_partitions=context.partition_key,
            metadata={"partition_expr": "created_on"},
            io_manager_key="snowflake_io_manager",
        )
    }
)

how do i set the asset_partitions from the context for this op?