code: def rnd(self):
      return np.random.RandomState(14)
  
imports: from collections import OrderedDict
  from contextlib import nullcontext
  import numpy
  from numpy.testing import assert_array_equal
  import pandas
  import pandas.testing
  import pytest
  from sksurv.testing import FixtureParameterFactory
  from sksurv.util import Surv, _PropertyAvailableIfDescriptor, property_available_if, safe_concat
label_desc: Use image node_id 1 for calling the ConcatCasesFactory obj's underlying member method code with example usage: obj.rnd() and returns: np