code: def test_sd_integrate2():
      """Test the integration"""
      mroi = make_subdomain()
      for k in mroi.get_id():
          assert mroi.get_volume(k) == mroi.integrate(id=k)
      volume_from_integration = mroi.integrate()
      volume_from_feature = mroi.get_volume()
      for i in range(mroi.k):
          assert volume_from_feature[i] == volume_from_integration[i]
  
imports: from os.path import dirname
  from os.path import join
  import numpy
  from nibabel import Nifti1Image, load
  from numpy.testing import assert_almost_equal, assert_array_equal
  from nipy.io.nibcompat import get_affine
  from ..discrete_domain import domain_from_binary_array, grid_domain_from_image
  from ..hroi import HROI_as_discrete_domain_blobs
  from ..mroi import subdomain_from_array, subdomain_from_balls
label_desc: Use image node_id 9 for calling a global function with example usage: test_sd_integrate2() without return types