code: def index(self):
      return timedelta_range("1 day", periods=10)
  
imports: from datetime import datetime, timedelta
  import numpy
  import pytest
  import pandas
  from pandas import CategoricalIndex, DatetimeIndex, Index, PeriodIndex, TimedeltaIndex, date_range, period_range, timedelta_range
  import pandas._testing
label_desc: Use image node_id 1 for calling the TestTimedeltaIndexEquals obj's underlying member method code with example usage: obj.index() and returns: timedelta_range