code: def test_struct_scalar_null():
      slr = cudf.Scalar(cudf.NA, dtype=StructDtype)
      assert slr.device_value.value is cudf.NA
  
imports: import numpy
  import pandas
  import pyarrow
  import pytest
  import cudf
  from cudf.core.dtypes import StructDtype
  from cudf.testing._utils import DATETIME_TYPES, TIMEDELTA_TYPES, assert_eq
label_desc: Use image node_id 11 for calling a global function with example usage: test_struct_scalar_null() without return types