code: def time(self):
      return [1, 2, 2, 3, 7, 6, 5, 5, 3, 9, 11, 13, 17, 13, 6, 23]
  
imports: from os.path import dirname, join
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  import pandas
  import pytest
  from sksurv.nonparametric import CensoringDistributionEstimator, SurvivalFunctionEstimator, kaplan_meier_estimator, nelson_aalen_estimator
  from sksurv.testing import FixtureParameterFactory
  from sksurv.util import Surv
label_desc: Use image node_id 1 for calling the SimpleDataKMCases obj's underlying member method code with example usage: obj.time() and returns: list