code: def test_to_timedelta64(self, td, unit):
      for res in [td.to_timedelta64(), td.to_numpy(), td.asm8]:
          assert isinstance(res, np.timedelta64)
          assert res.view("i8") == td._value
          if unit == NpyDatetimeUnit.NPY_FR_s.value:
              assert res.dtype == "m8[s]"
          elif unit == NpyDatetimeUnit.NPY_FR_ms.value:
              assert res.dtype == "m8[ms]"
          elif unit == NpyDatetimeUnit.NPY_FR_us.value:
              assert res.dtype == "m8[us]"
  
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 11 for calling the TestNonNano obj's underlying member method code with example usage: obj.test_to_timedelta64(td, unit) without return types