code: def test_pickle_index():
      nelem = 10
      idx = GenericIndex(np.arange(nelem), name="a")
      pickled = pickle.dumps(idx)
      out = pickle.loads(pickled)
      assert (idx == out).all()
  
file_path: cudf/python/cudf/cudf/tests/test_pickling.py
imports: import pickle
  import numpy
  import pandas
  import pytest
  from cudf import DataFrame, GenericIndex, RangeIndex, Series
  from cudf.core.buffer import as_buffer
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 6 for calling a global function with example usage: test_pickle_index() without return types