code: def __init__(self):
      self.nb_calls = 0
  
imports: import atexit
  import os
  import unittest
  import warnings
  import numpy
  import pytest
  from scipy import sparse
  from sklearn.discriminant_analysis import LinearDiscriminantAnalysis
  from sklearn.tree import DecisionTreeClassifier
  from sklearn.utils import _IS_WASM
  from sklearn.utils._testing import TempMemmap, _convert_container, _delete_folder, assert_allclose, assert_allclose_dense_sparse, assert_no_warnings, assert_raise_message, assert_raises, assert_raises_regex, assert_run_python_script_without_output, check_docstring_parameters, create_memmap_backed_data, ignore_warnings, raises, set_random_state
  from sklearn.utils.deprecation import deprecated
  from sklearn.utils.fixes import CSC_CONTAINERS, CSR_CONTAINERS, parse_version, sp_version
  from sklearn.utils.metaestimators import available_if
label_desc: Use image node_id 1 to create a new RegistrationCounter object  with example: obj = RegistrationCounter()