code: def make_schema():
      return pa.schema(
          [("ints", pa.list_(pa.int32()))],
          metadata={b"key1": b"value1"},
      )
  
imports: import contextlib
  import ctypes
  import gc
  import pyarrow
  import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: make_schema() and returns: pa