code: def test_sort_struct_nested_nullable(spark):
      _test_sort_struct_nested(spark, False)
  
imports: from __future__ import annotations
  import pytest
  import chispa
  import quinn
  from pyspark.sql import DataFrame
  from pyspark.sql.types import StructType, StructField, StringType, IntegerType, ArrayType, MapType
  from quinn.transformations import flatten_struct, flatten_map, flatten_dataframe
  from tests.conftest import auto_inject_fixtures
label_desc: Use image node_id 21 for calling a global function with example usage: test_sort_struct_nested_nullable(spark) without return types