code: def test_astype_to_td64d_raises(self, index_or_series):
      # We don't support "D" reso
      scalar = Timedelta(days=31)
      td = index_or_series(
          [
              scalar,
              scalar,
              scalar + timedelta(minutes=5, seconds=3),
              NaT,
          ],
          dtype="m8[ns]",
      )
      msg = (
          r"Cannot convert from timedelta64\[ns\] to timedelta64\[D\]. "
          "Supported resolutions are 's', 'ms', 'us', 'ns'"
      )
      with pytest.raises(ValueError, match=msg):
          td.astype("timedelta64[D]")
  
file_path: pandas/pandas/tests/indexes/timedeltas/methods/test_astype.py
imports: from datetime import timedelta
  import numpy
  import pytest
  import pandas
  from pandas import Index, NaT, Timedelta, TimedeltaIndex, timedelta_range
  import pandas._testing
  from pandas.core.arrays import TimedeltaArray
label_desc: Use image node_id 6 for calling the TestTimedeltaIndex obj's underlying member method code with example usage: obj.test_astype_to_td64d_raises(index_or_series) without return types