class_docstr: Note: Tests currently do a poor job of testing functionality
code: def fake_noise_fun(i, j, l, m):
      return m * i + l - j
  
imports: import os
  import nibabel
  import numpy
  import pytest
  from ...testing import utils
  from ..confounds import CompCor, TCompCor, ACompCor
label_desc: Use image node_id 14 for calling the TestCompCor obj's underlying member method code with example usage: obj.fake_noise_fun(i, j, l, m) and returns: unknown