code: def dummy_design(rng):
      """Use to test errors and warnings."""
      return _create_design(
          rng, n_samples=10, n_descriptors=1, n_regressors=1
      )
  
imports: import nibabel
  import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal, assert_array_less, assert_equal
  from scipy import stats
  from nilearn.conftest import _rng
  from nilearn.maskers import NiftiMasker
  from nilearn.mass_univariate import permuted_ols
label_desc: Use image node_id 6 for calling a global function with example usage: dummy_design(rng) and returns: _create_design