code: def make_batches():
      schema = make_schema()
      return [
          pa.record_batch([[[1], [2, 42]]], schema),
          pa.record_batch([[None, [], [5, 6]]], schema),
      ]
  
imports: import contextlib
  import ctypes
  import gc
  import pyarrow
  import pytest
label_desc: Use image node_id 8 for calling a global function with example usage: make_batches() and returns: list