code: def _make_dummy_contrasts_dmtx():
      frame_times = np.linspace(0, 127 * 1.0, 128)
      dmtx = make_first_level_design_matrix(
          frame_times,
          drift_model="polynomial",
          drift_order=3,
      )
      contrast = {"test": np.ones(4)}
      return contrast, dmtx
  
imports: import numpy
  import pandas
  import pytest
  from nibabel import load
  from nilearn._utils.data_gen import write_fake_fmri_data_and_design
  from nilearn.glm.first_level import FirstLevelModel
  from nilearn.glm.first_level.design_matrix import make_first_level_design_matrix
  from nilearn.glm.second_level import SecondLevelModel
  from nilearn.maskers import NiftiMasker
  from nilearn.reporting import glm_reporter
label_desc: Use image node_id 21 for calling a global function with example usage: _make_dummy_contrasts_dmtx() and returns: contrast,  dmtx