code: def test_nat_converters(self):
      result = to_timedelta("nat").to_numpy()
      assert result.dtype.kind == "M"
      assert result.astype("int64") == iNaT
  
      result = to_timedelta("nan").to_numpy()
      assert result.dtype.kind == "M"
      assert result.astype("int64") == iNaT
  
imports: from datetime import timedelta
  import sys
  from hypothesis import given, strategies
  import numpy
  import pytest
  from pandas._libs import lib
  from pandas._libs.tslibs import NaT, iNaT
  from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
  from pandas.errors import OutOfBoundsTimedelta
  from pandas import Timedelta, to_timedelta
  import pandas._testing
label_desc: Use image node_id 6 for calling the TestTimedeltas obj's underlying member method code with example usage: obj.test_nat_converters() without return types