code: def test_convert_dttm(
      target_type: str, expected_result: Optional[str], dttm: datetime
  ) -> None:
      from superset.db_engine_specs.kylin import KylinEngineSpec as spec
  
      assert_convert_dttm(spec, target_type, expected_result, dttm)
  
imports: from datetime import datetime
  from typing import Optional
  import pytest
  from tests.unit_tests.db_engine_specs.utils import assert_convert_dttm
  from tests.unit_tests.fixtures.common import dttm
label_desc: Use image node_id 1 for calling a global function with example usage: test_convert_dttm(target_type, expected_result, dttm) without return types