code: def test_load_fsaverage_hemispheres_have_file():
      """Make sure file paths are present."""
      result = load_fsaverage()
      left_hemisphere_meshes = [
          mesh for mesh in result.values() if "left_hemisphere" in mesh
      ]
      assert len(left_hemisphere_meshes) > 0
      right_hemisphere_meshes = [
          mesh for mesh in result.values() if "right_hemisphere" in mesh
      ]
      assert len(right_hemisphere_meshes) > 0
  
imports: import pytest
  from nilearn.experimental.surface import load_fsaverage
label_desc: Use image node_id 3 for calling a global function with example usage: test_load_fsaverage_hemispheres_have_file() without return types