code: def test_get_nested_lists():
      sr = cudf.Series(
          [
              [
                  [[1, 2], [3, 4]],
                  [[5, 6], [7, 8]],
                  [],
                  [[3, 4], [7, 8]],
              ],
              [[], [[9, 10]], [[11, 12], [13, 14]]],
          ]
      )
      expect = cudf.Series([[[1, 2], [3, 4]], []])
      got = sr.list.get(0)
      assert_eq(expect, got)
  
imports: import functools
  import operator
  import numpy
  import pandas
  import pyarrow
  import pytest
  import cudf
  from cudf import NA
  from cudf._lib.copying import get_element
  from cudf.api.types import is_scalar
  from cudf.testing._utils import DATETIME_TYPES, NUMERIC_TYPES, TIMEDELTA_TYPES, assert_eq
label_desc: Use image node_id 18 for calling a global function with example usage: test_get_nested_lists() without return types