code: def test_repr(self):
      model = self.estimator()
      expected = (
          self.estimator.__name__
          + "(convert_labels: False, convert_to_vw: True, passes: 1, quiet: True)"
      )
      assert expected == model.__repr__()
  
imports: from collections import namedtuple
  import os
  import numpy
  from packaging import version
  import pandas
  import pytest
  from scipy.sparse import csr_matrix
  from sklearn import datasets, __version__
  from sklearn.model_selection import KFold
  from sklearn.utils.estimator_checks import check_estimator
  from vowpalwabbit.sklearn import VW, VWClassifier, VWRegressor, tovw, VWMultiClassifier, VWRegressor
label_desc: Use image node_id 2 for calling the TestVWRegressor obj's underlying member method code with example usage: obj.test_repr() without return types