code: def test_textset_without_label(self):
      local_set = LocalTextSet(self.texts)
      assert local_set.get_labels() == [-1, -1, -1]
      distributed_set = DistributedTextSet(
          self.sc.parallelize(self.texts)
      )
      assert distributed_set.get_labels().collect() == [-1, -1, -1]
  
imports: import pytest
  import shutil
  from bigdl.optim.optimizer import SGD
  from zoo.feature.common import ChainedPreprocessing, Relations
  from zoo.feature.text import *
  from zoo.common.nncontext import *
  from zoo.models.textclassification import TextClassifier
  from zoo.models.textmatching import KNRM
  from zoo.pipeline.api.keras.models import Sequential
  from zoo.pipeline.api.keras.layers import TimeDistributed
  from zoo.pipeline.api.keras.objectives import SparseCategoricalCrossEntropy
label_desc: Use image node_id 3 for calling the TestTextSet obj's underlying member method code with example usage: obj.test_textset_without_label() without return types