class_docstr: Tests specific to IntervalIndex with integer-like subtype
class_docstr_tok: ["Tests","specific","to","IntervalIndex","with","integer-like","subtype"]
code: def index(self, request):
      return request.param
  
imports: import re
  import numpy
  import pytest
  from pandas.core.dtypes.dtypes import CategoricalDtype, IntervalDtype
  from pandas import CategoricalIndex, Index, IntervalIndex, NaT, Timedelta, Timestamp, interval_range
  import pandas._testing
label_desc: Use image node_id 1 for calling the TestIntSubtype obj's underlying member method code with example usage: obj.index(request) and returns: request