code: def datadir(base_datadir):
      return base_datadir / "feather"
  
imports: import io
  import os
  import sys
  import tempfile
  import pytest
  import hypothesis
  import hypothesis.strategies
  import numpy
  import pyarrow
  import pyarrow.tests.strategies
  from pyarrow.feather import read_feather, write_feather, read_table, FeatherDataset
label_desc: Use image node_id 1 for calling a global function with example usage: datadir(base_datadir) and returns: unknown