code: def test_to_timedelta_inference_without_warning(self):
      # GH#41731 inference produces a warning in the Series constructor,
      #  but _not_ in to_timedelta
      vals = ["00:00:01", pd.NaT]
      with tm.assert_produces_warning(None):
          result = to_timedelta(vals)
  
      expected = TimedeltaIndex([pd.Timedelta(seconds=1), pd.NaT])
      tm.assert_index_equal(result, expected)
  
imports: from datetime import time, timedelta
  import numpy
  import pytest
  from pandas.compat import IS64
  from pandas.errors import OutOfBoundsTimedelta
  import pandas
  from pandas import Series, TimedeltaIndex, isna, to_timedelta
  import pandas._testing
  from pandas.core.arrays import TimedeltaArray
label_desc: Use image node_id 18 for calling the TestTimedeltas obj's underlying member method code with example usage: obj.test_to_timedelta_inference_without_warning() without return types