code: def test_signal_extr_equiv_4d_no_shared(self):
      self._test_4d_label(
          self.base_wanted,
          self.fake_equiv_4d_label_data,
          incl_shared_variance=False,
      )
  
file_path: nipype/nipype/interfaces/tests/test_nilearn.py
imports: import os
  import numpy
  from ...testing import utils
  from ..None import nilearn
  from ...pipeline import engine
  import pytest
  import numpy.testing
label_desc: Use image node_id 4 for calling the TestSignalExtraction obj's underlying member method code with example usage: obj.test_signal_extr_equiv_4d_no_shared() without return types