code: def test_get_indexer(self):
      idx = to_timedelta(["0 days", "1 days", "2 days"])
      tm.assert_numpy_array_equal(
          idx.get_indexer(idx), np.array([0, 1, 2], dtype=np.intp)
      )
  
      target = to_timedelta(["-1 hour", "12 hours", "1 day 1 hour"])
      tm.assert_numpy_array_equal(
          idx.get_indexer(target, "pad"),
          np.array([-1, 0, 1], dtype=np.intp),
      )
      tm.assert_numpy_array_equal(
          idx.get_indexer(target, "backfill"),
          np.array([0, 1, 2], dtype=np.intp),
      )
      tm.assert_numpy_array_equal(
          idx.get_indexer(target, "nearest"),
          np.array([0, 1, 1], dtype=np.intp),
      )
  
      res = idx.get_indexer(
          target, "nearest", tolerance=Timedelta("1 hour")
      )
      tm.assert_numpy_array_equal(
          res, np.array([0, -1, 1], dtype=np.intp)
      )
  
imports: from datetime import datetime
  import re
  import numpy
  import pytest
  from pandas import Index, NaT, Timedelta, TimedeltaIndex, Timestamp, notna, offsets, timedelta_range, to_timedelta
  import pandas._testing
label_desc: Use image node_id 1 for calling the TestGetIndexer obj's underlying member method code with example usage: obj.test_get_indexer() without return types