code: def Y(rng):
      return rng.standard_normal(size=(40, 10))
  
file_path: nilearn/nilearn/glm/tests/test_regression.py
imports: import pytest
  from numpy.testing import assert_almost_equal, assert_array_almost_equal, assert_array_equal
  from nilearn.glm import ARModel, OLSModel, SimpleRegressionResults
label_desc: Use image node_id 2 for calling a global function with example usage: Y(rng) and returns: rng