code: def index(self, request):
      # NB: not actually an Index object
      idx = request.param
      idx.name = "A"
      return idx
  
imports: import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, Series, Timestamp
  import pandas._testing
label_desc: Use image node_id 1 for calling the TestQuantileExtensionDtype obj's underlying member method code with example usage: obj.index(request) and returns: idx