code: def draw(self, **kwargs):
      pass
  
imports: import os
  import pytest
  from unittest import mock
  from yellowbrick.base import Visualizer
  from yellowbrick.pipeline import VisualPipeline
  from sklearn.pipeline import Pipeline
  from sklearn.base import BaseEstimator, TransformerMixin
label_desc: Use image node_id 3 for calling the MockVisualTransformer obj's underlying member method code with example usage: obj.draw() without return types