code: def test_epoch_to_dttm() -> None:
      """
      DB Eng Specs (crate): Test epoch to dttm
      """
      from superset.db_engine_specs.crate import CrateEngineSpec
  
      assert CrateEngineSpec.epoch_to_dttm() == "{col} * 1000"
  
file_path: superset/tests/unit_tests/db_engine_specs/test_crate.py
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_epoch_to_dttm() without return types