code: def setUp(self):
      self.n_jobs = 2
  
      # only calculate some features to reduce load on travis ci
      self.name_to_param = {
          "maximum": None,
          "sum_values": None,
          "abs_energy": None,
          "minimum": None,
          "mean": None,
          "median": None,
      }
  
imports: import os
  import tempfile
  import numpy
  import pandas
  from mock import Mock
  from tests.fixtures import DataTestCase
  from tsfresh.feature_extraction.extraction import extract_features
  from tsfresh.feature_extraction.settings import ComprehensiveFCParameters, PickableSettings
  from tsfresh.utilities.distribution import IterableDistributorBaseClass, MapDistributor
label_desc: Use image node_id 1 for calling the ParallelExtractionTestCase obj's underlying member method code with example usage: obj.setUp() without return types