code: def test_f_output_new_api():
      res = RESULTS.Fcontrast([1, 0])
  
      assert_array_almost_equal(res.effect, RESULTS.theta[0])
      assert_array_almost_equal(res.covariance, RESULTS.vcov()[0][0])
  
file_path: nilearn/nilearn/glm/tests/test_model.py
imports: import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal
  from nilearn.glm import OLSModel
label_desc: Use image node_id 7 for calling a global function with example usage: test_f_output_new_api() without return types