code: def test_implementation_limits(self):
      min_td = Timedelta(Timedelta.min)
      max_td = Timedelta(Timedelta.max)
  
      # GH 12727
      # timedelta limits correspond to int64 boundaries
      assert min_td._value == iNaT + 1
      assert max_td._value == lib.i8max
  
      # Beyond lower limit, a NAT before the Overflow
      assert (min_td - Timedelta(1, "ns")) is NaT
  
      msg = "int too (large|big) to convert"
      with pytest.raises(OverflowError, match=msg):
          min_td - Timedelta(2, "ns")
  
      with pytest.raises(OverflowError, match=msg):
          max_td + Timedelta(1, "ns")
  
      # Same tests using the internal nanosecond values
      td = Timedelta(min_td._value - 1, "ns")
      assert td is NaT
  
      msg = "Cannot cast -9223372036854775809 from ns to 'ns' without overflow"
      with pytest.raises(OutOfBoundsTimedelta, match=msg):
          Timedelta(min_td._value - 2, "ns")
  
      msg = "Cannot cast 9223372036854775808 from ns to 'ns' without overflow"
      with pytest.raises(OutOfBoundsTimedelta, match=msg):
          Timedelta(max_td._value + 1, "ns")
  
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 16 for calling the TestTimedeltas obj's underlying member method code with example usage: obj.test_implementation_limits() without return types