code: def test_this():
      train_data = mz.datasets.toy.load_data()
      test_data = mz.datasets.toy.load_data(stage="test")
      dssm_preprocessor = mz.preprocessors.DSSMPreprocessor()
      train_data_processed = dssm_preprocessor.fit_transform(
          train_data, verbose=0
      )
      type(train_data_processed)
      test_data_transformed = dssm_preprocessor.transform(test_data)
      type(test_data_transformed)
  
imports: import pytest
  import numpy
  from matchzoo.preprocessors import units
  import matchzoo
  import tempfile
  import os
label_desc: Use image node_id 15 for calling a global function with example usage: test_this() without return types