code: def test_plot_contrasts():
      contrast, dmtx = _make_dummy_contrasts_dmtx()
      glmr._plot_contrasts(
          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 22 for calling a global function with example usage: test_plot_contrasts() without return types