from fmriprep.workflows.bold.apply import init_bold_volumetric_resample_wf

wf = init_bold_volumetric_resample_wf(
   metadata={
      'RepetitionTime': 2.0,
      'PhaseEncodingDirection': 'j-',
      'TotalReadoutTime': 0.03,
   },
   fieldmap_id='my_fieldmap',
)