code: def execute_ds(ds: ray.data.Dataset):
      ds = ds.materialize()
  
imports: import argparse
  import json
  import time
  from typing import Dict, List, Any
  import pandas
  import pyarrow
  import numpy
  import ray
  from ray.data.block import BlockMetadata
  from ray.data.context import DataContext, DEFAULT_TARGET_MAX_BLOCK_SIZE
  from ray.data.datasource import Datasource, ReadTask, Reader
label_desc: Use image node_id 2 for calling a global function with example usage: execute_ds(ds) without return types