code: def test_transform(self, setup, kg):
      entities = [f"{URL}#{entity}" for entity in ROOTS_WITHOUT_URL]
      assert (
          type(
              RDF2VecTransformer(verbose=2)
              .fit(kg, entities)
              .transform(kg, entities)
          )
          == tuple
      )
  
file_path: pyRDF2Vec/tests/test_rdf2vec.py
imports: import os
  import pickle
  import numpy
  import pytest
  from pyrdf2vec.graphs import KG, Vertex
  from pyrdf2vec.rdf2vec import RDF2VecTransformer
  from pyrdf2vec.walkers import RandomWalker, WLWalker
label_desc: Use image node_id 6 for calling the TestRDF2VecTransformer obj's underlying member method code with example usage: obj.test_transform(setup, kg) without return types