code: def test_identity(self):
      td = Timedelta(10, unit="d")
      assert isinstance(td, Timedelta)
      assert isinstance(td, timedelta)
  
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 10 for calling the TestTimedeltas obj's underlying member method code with example usage: obj.test_identity() without return types