code: def test_reconst_mmri_laplacian():
      reconst_mmri_core(ReconstMAPMRIFlow, lap=True, pos=False)
  
file_path: dipy/dipy/workflows/tests/test_reconst_mapmri.py
imports: from os.path import join
  from tempfile import TemporaryDirectory
  import warnings
  import numpy
  import numpy.testing
  import pytest
  from dipy.data import get_fnames
  from dipy.io.gradients import read_bvals_bvecs
  from dipy.io.image import load_nifti_data
  from dipy.core.gradients import generate_bvecs
  from dipy.reconst import mapmri
  from dipy.workflows.reconst import ReconstMAPMRIFlow
label_desc: Use image node_id 1 for calling a global function with example usage: test_reconst_mmri_laplacian() without return types