code: def test_register_dwi_series_multi_b0():
      # Test if register_dwi_series works with multiple b0 images
      dwi_fname, dwi_bval_fname, dwi_bvec_fname = dpd.get_fnames(
          "sherbrooke_3shell"
      )
      data, affine = load_nifti(dwi_fname)
      bvals, bvecs = read_bvals_bvecs(dwi_bval_fname, dwi_bvec_fname)
  
      data_small = data[..., :3]
      data_small = np.concatenate([data[..., :1], data_small], axis=-1)
      bvals_small = np.concatenate([bvals[:1], bvals[:3]], axis=0)
      bvecs_small = np.concatenate([bvecs[:1], bvecs[:3]], axis=0)
      gtab = dpg.gradient_table(bvals_small, bvecs_small)
      _ = motion_correction(data_small, gtab, affine)
  
imports: import os.path
  import pytest
  from tempfile import TemporaryDirectory
  import numpy
  import numpy.testing
  import nibabel
  import dipy.data
  import dipy.core.gradients
  from dipy.align import syn_registration, register_series, register_dwi_series, center_of_mass, translation, rigid_isoscaling, rigid_scaling, rigid, affine, motion_correction, affine_registration, streamline_registration, write_mapping, read_mapping, register_dwi_to_template
  from dipy.align.imwarp import DiffeomorphicMap
  from dipy.tracking.utils import transform_tracking_output
  from dipy.io.streamline import save_trk
  from dipy.io.stateful_tractogram import StatefulTractogram, Space
  from dipy.io.gradients import read_bvals_bvecs
  from dipy.io.image import load_nifti
  from dipy.testing.decorators import set_random_number_generator
label_desc: Use image node_id 9 for calling a global function with example usage: test_register_dwi_series_multi_b0() without return types